Which is a type of tonic receptor that detects both continuous deep pressure and distortion of the skin? Multiple Choice a) Lamellated corpuscles b) End bulbs c) Bulbous corpuscles d) Tactile corpuscles

Answers

Answer 1

Lamellated corpuscles, also known as Pacinian corpuscles, are a type of tonic receptor that detects both continuous deep pressure and distortion of the skin, option (a) is correct.

These specialized sensory receptors are found in the subcutaneous tissue, tendons, and joint capsules. Lamellated corpuscles have a unique structure consisting of concentric layers of connective tissue surrounding a nerve ending.

When pressure or distortion is applied to the skin, these corpuscles generate nerve impulses that are transmitted to the brain, allowing us to perceive sensations such as deep pressure, vibration, and texture. They are particularly sensitive to rapid changes in pressure and are responsible for our ability to feel objects and sense touch with precision, option (a) is correct.

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Related Questions

1) The seed color in a species of flowering plant can be either green or white, with the trait determined by two independently assorting loci. At one locus, the G allele produces green color and is dominant to the recessive g allele for white. At the other locus the dominant, C, allele code for color production and its recessive counterpart, c, codes for colorless or white seeds. A pure-breeding green seeded plant is crossed with a white-seeded plant homozygous for both loci.
a) Identify all possible genotype(s) for the white-seeded parent and the F1 genotype(s) that each would produce when crossed with the true-breeding green seeded plant.
b) Assume that the genotype of the original white-seeded parent is gg, cc, F1 plants from the cross described in a. are crossed to produce the F2. Identify the F2 phenotypes and their expected ratio.
c) What would be the probability of producing a white-seeded plant in a cross between two F2 plants of the genotypes Ggcc and ggCc.
2) A snapdragon plant that bred true for white petals was crossed to a plant that bred true for purple petals with no spots, and all the F1 had white petals. The F1 was selfed and among the F2 three phenotypes were obtained in the following numbers: white 240 purple no spots 61 purple with white spots 19 total 320
a) Propose and justify an explanation for these results, showing genotypes for all generations. Make up your own symbols
b) Calculate the chi square value for the data and decide on your hypothesis. Use the chi-square table provided in probability module

Answers

1. With alleles G, g ,C, c

a) The F1 genotype(s) that each would produce when crossed with the true-breeding green seeded plant are:GgCc and Ggcc

b) Phenotypes : Green seeded, colored seeds: 9/16 (G_C_ or G_cc)Green seeded, white seeds: 3/16 (ggC_ or ggcc)Yellow seeded, colored seeds: 3/16 (G_cc or Gc_)Yellow seeded, white seeds: 1/16 (ggcc)The expected phenotypic ratio is 9:3:3:1

c) Probability of getting white-seeded plant in a cross between two F2 plants of the genotypes Ggcc and ggCc = 1/4 × 1/4 = 1/16

2. a) The F1 genotypes are Cc Ss.

b) Critical value of chi-square (5.991) is greater than the chi-square calculated (1/3)

1. With alleles G, g ,C, c  

a) Genotypes of the parents are as follows:

White seeded parent: gg cc

Green seeded parent: GG CC

The gametes that each parent can produce are as follows:

White seeded parent: g c

Green seeded parent: G C

The F1 genotype(s) that each would produce when crossed with the true-breeding green seeded plant are:GgCc and Ggcc

b) The F1 plants are GgCc and Ggcc. The possible gametes they can form are GC, Gc, gC, and gc.

The possible genotypes of the F2 offspring are:

Green seeded, colored seeds: 9/16 (G_C_ or G_cc)

Green seeded, white seeds: 3/16 (ggC_ or ggcc)

Yellow seeded, colored seeds: 3/16 (G_cc or Gc_)

Yellow seeded, white seeds: 1/16 (ggcc)

The expected phenotypic ratio is 9:3:3:1

c) The genotypes of the F2 plants are Ggcc and ggCc. Both are heterozygous for the seed color and seed coat color genes. Ggcc: GgCc × ggcc

Gametes of GgCc: GC, Gc, gC, gc

Gametes of ggcc: gc

Probability of getting white-seeded plant from Ggcc F2 plant: 1/4

Probability of getting white-seeded plant from ggCc F2 plant: 1/4

Probability of getting white-seeded plant in a cross between two F2 plants of the genotypes Ggcc and ggCc = 1/4 × 1/4 = 1/16

The genotype of the original white-seeded parent is gg cc.

2. a) The genotypes of the parents are as follows:

Plant with white petals: C_ ss

Plant with purple petals and no spots: cc SS

Gametes of the parents are:

Plant with white petals: C_ ss - Cs, cS

Plant with purple petals and no spots: cc SS - cScS

The F1 genotypes are Cc Ss.

The phenotypes are white petals.

b)  Observed values:

White = 240

Purple no spots = 61

Purple with white spots = 19

Total = 320

Expected values:

White = (320/4) × 3 = 240

Purple no spots = (320/4) × 1 = 80

Purple with white spots = (320/4) × 1 = 20

Degrees of freedom = (number of classes – 1) = 3 – 1 = 2

Critical value of chi-square at α = 0.05 with 2 degrees of freedom is 5.991.

Calculation of chi-square value:χ2 = (240 − 240)2/240 + (61 − 80)2/80 + (19 − 20)2/20 = 1/3

Critical value of chi-square (5.991) is greater than the chi-square calculated (1/3).

Thus, we accept the hypothesis that there is no statistically significant difference between observed and expected values.

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What will be the outcome of the following cross in terms of normal and petite spore ratios? Cross: a segregational (nuclear) petite against a segregational (nuclear) petite, the two strains having mutations in different, unlinked, genes. A. half petite, half normal B. 3 parts petite, 1 part normal C. 3 parts normal, 1 part petite D. all petite E. 9 parts normal, 7 parts petite

Answers

A cross between two segregated petites would result in all petite offspring in the second generation. All petites, option (d), is the right answer.

In yeast, extranuclear inheritance is seen in the small mutants. The kind of small in yeast affects the inheritance pattern, which is quite diverse.

The segregational petite, which is one of three kinds of petites, is produced by nuclear mutations and displays Mendelian inheritance (1:1 segregation).

In the f1 generation, a cross between two haploid segregational petites would result in a diploid segregational petite. Additionally, all petites are produced during meiosis in the diploid segregations petites.

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what does it mean that a disc rotates with a frequency of 0.25 hz?

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When a disc rotates with a frequency of 0.25 Hz, it means that it completes 0.25 cycles of rotation in one second. A frequency of 0.25 Hz corresponds to one complete rotation every 4 seconds.

What is frequency?

The number of cycles that occur per second is referred to as frequency. Hertz is the unit of measurement for frequency. It is abbreviated as Hz. A cycle is one complete oscillation, vibration, or rotation. One complete oscillation or vibration is completed in one cycle. The period of oscillation is the amount of time it takes to complete one cycle.

The unit for period is seconds. The frequency of oscillation is the inverse of the period. As a result, if T is the period of oscillation, the frequency of oscillation f is given by:f = 1/T

In the case, the disc rotates with a frequency of 0.25 Hz. Therefore, the period T is given by: T = 1/f= 1/0.25= 4 seconds. Thus, the disc completes one full rotation every 4 seconds.

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since the dna molecule holds the genetic code, why can't the dna attach to the ribosome?

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The DNA molecule cannot attach to the ribosome since it holds the genetic code because the process of protein synthesis happens in two steps.

The first step is transcription, in which the DNA sequence of a gene is copied into a molecule of RNA (mRNA) by the RNA polymerase enzyme. The mRNA carries the genetic information to the ribosome, which is located in the cytoplasm, for translation. The second step is translation, in which the ribosome reads the mRNA sequence and assembles a chain of amino acids, which forms a protein.

Therefore, DNA is too large to pass through nuclear pores, which are the only points of entry or exit from the nucleus. In addition, DNA is too large to serve as a template for protein synthesis directly. The RNA intermediate, on the other hand, can leave the nucleus and serve as a template for protein synthesis. This is why DNA cannot attach to the ribosome.

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which molecule was coded for by the longest piece of dna, assuming that no post-transcriptional rna processing or splicing has occurred? (eoc released question)

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The molecule coded for by the longest piece of DNA assuming that no post-transcriptional RNA processing or splicing has occurred is a polysaccharide with 60 sugar (Option B).

What is DNA?

Deoxyribonucleic acid (DNA) is the genetic material that carries information about the structure, function, growth, and development of living things. DNA is a long polymer made up of four types of nucleotides arranged in a particular sequence. The order of nucleotides determines the genetic information that is passed from one generation to the next.

A polysaccharide with 60 sugar units is classified as a hexaose. Hexoses are monosaccharides that consist of six carbon atoms. Examples of hexoses include glucose, fructose, and galactose. Polysaccharides are formed when monosaccharides are linked together through glycosidic bonds. Some examples of polysaccharides include starch, glycogen, and cellulose.

Your question is incomplete, but most probably your full options were

(A) A protein with 25 amino acids

(B) A polysaccharide with 60 sugars

(C) A mRNA molecule with 20 codons

(D) An mRNA molecule with 45 nucleotides

Thus, the correct option is B.

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one mechanism by ehich ions are specifically transported into the cell is

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One mechanism by which ions are specifically transported into the cell is through ion channels.

Ion channels are specialized proteins that span the cell membrane and facilitate the selective transport of ions across the membrane. These channels have specific binding sites that allow them to recognize and transport specific ions. The movement of ions through ion channels is highly regulated and controlled by various factors such as voltage, ligand binding, or mechanical stimuli. When an ion channel is open, ions can move across the cell membrane down their concentration gradient or in response to electrical potential differences. This selective transport of ions through ion channels is crucial for maintaining proper cellular function, regulating cell signaling, and establishing ion concentration gradients necessary for various physiological processes.

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going the opposite direction than nature? using the short peptide sequence find one rna

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To find an RNA sequence from a short peptide sequence, we need to perform a process known as reverse translation.

Reverse translation is the process of deducing the nucleotide sequence of a nucleic acid, usually DNA, based on the amino acid sequence of a protein or peptide.

Sequence of reverse translation consists of the following steps:

1. Identify the amino acid sequence of the peptide.

2. Use a codon usage table to find the most likely nucleotide sequence for each amino acid.

3. Concatenate the nucleotide sequences to form a DNA sequence.

4. Transcribe the DNA sequence into an RNA sequence using the base pairing rules (A-U and G-C).

5. If required, perform RNA processing steps such as splicing to obtain the final RNA sequence.

Below is an example of a short peptide sequence and its corresponding RNA sequence obtained via reverse translation:

Short peptide sequence: MET-LYS-GLY-RNA

Suggested nucleotide sequence: AUG-AAA-GGU-AGU

Reverse-translated DNA sequence: ATGAAAGGTCAC

Transcribed RNA sequence: AUGAAA GGUAGU

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described the major organism groups important to environmental engineering, many which are used in treatment of domestic, agricultural, and industrial wastes. Identify the major organism groups listed in this figure (e.g., viruses, bacteria, algae, protozoa, rotifers) that: (a) use solar energy to transfer oxygen into wastewater stabilization ponds (i.e., lagoons), (b) are key organisms in the removal of the organic matter that makes up biochemical oxygen demand in wastewater, (c) are single-cell organisms found in biological wastewater treatment and resource recovery systems that feed on bacteria and algae, (d) are multi-cellular organisms found in biological wastewater systems, (e) include the gram-positive organism, Nocardia, which is normally found in wastewater treatment plants, but if it experiences excessive growth, can result in foaming and poor settling of solids in the secondary settling reactor (i.e., clarifier)

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Several significant organism groups serve significant roles in the context of environmental engineering and wastewater treatment. Here are the main organism groupings that have been determined based on the provided descriptions:

(a) Algae are photosynthesis-capable creatures that can use solar energy to create oxygen through photosynthesis. Algae help carry oxygen into the wastewater in wastewater stabilization ponds (lagoons).

(b) Bacteria: Bacteria are important microorganisms in the process of removing organic material from wastewater. They are in charge of converting complex organic chemicals into simpler ones, hence lowering the biochemical oxygen demand (BOD).

(c) Protozoa: Single-celled creatures known as protozoa are present in biological wastewater treatment systems. Taking use of the bacteria and algae in the environment, they are vital components of it. Their predation aids in maintaining the balance of microorganisms in the treatment system and controlling bacterial populations.

(d) Rotifers: Multicellular creatures known as rotifers are present in biological wastewater treatment systems. They are tiny creatures that aid in the decomposition of organic materials and support the stability of the environment.

(e) Nocardia is a particular genus of Gram-positive bacteria that is frequently discovered in wastewater treatment facilities. Nocardia are common, however, their rapid proliferation can cause foaming problems and poor solids settling in the secondary settling reactor (clarifier) of the treatment process.

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What is wrong with this experiment? In 1668 Francesco Redi did a series of experiments on spontaneous generation. He began by putting similar pieces of meat into 12 identical jars. Four jars were left open to the air, four were sealed, and four were covered with gauze (the gauze will exclude the flies while allowing the meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat. In both experiments, flies appeared in all of the open jars and only in the open jars.
- - - - -
Answers:
- This experiment does not have a control group.
- There was no dependent variable.
- The experiment does not have a question.
- This experiment is a well-designed experiment and has nothing wrong with it.

Answers

The mistake in Francesco Redi's experiment was A. This experiment does not have a control group.

In the given experiment conducted by Francesco Redi, the jars left open to the air can be considered the experimental group, as they are the ones being exposed to potential factors that could lead to the appearance of flies in the meat. However, for a valid experiment, it is crucial to have a control group that serves as a baseline for comparison. The control group should be identical to the experimental group in all aspects except for the variable being tested.

In this case, a suitable control group would involve jars that are identical to the experimental group (same type of meat, same conditions), but with an additional factor: covering the jars completely or using a non-permeable material. This control group would help determine if the appearance of flies in the open jars is solely due to exposure to air or if there are other factors at play. Without a control group, it is challenging to confidently attribute the presence of flies only to the exposure to air, as there is no reference point for comparison.

Therefore, the absence of a control group is a limitation of this experiment. Including a control group would have strengthened the validity of the results and allowed for more reliable conclusions to be drawn regarding the relationship between exposure to air and the appearance of flies in the meat.

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1. Compare and contrast gray matter and white matter with regard to structure, location, function, cell types, etc.
2. Compare and contrast unmyelinated and myelinated axons with regard to structure, function, conduction, location, cells, etc.
3. How do interneurons contribute to the overall function of the nervous system

Answers

1. Gray matter contains neural synapses and dendrites, while white matter contains axon tracts covered in myelin.

2. Myelinated axons are associated with Schwann cells (in the peripheral nervous system) or oligodendrocytes (in the central nervous system).

3. Interneurons enable reflexes, coordinate voluntary movements, relay information between sensory and motor neurons, and contribute to higher cognitive functions.

1. Gray matter is composed of neuron cell bodies and is found in the outer layers of the brain and the inner regions of the spinal cord. It is involved in information processing and integration. White matter consists of myelinated axons and is located beneath the gray matter. It facilitates communication between different areas of the brain and spinal cord.

2. Unmyelinated axons lack a myelin sheath and are found in both gray and white matter. They conduct nerve impulses more slowly but are more widespread. Myelinated axons have a myelin sheath that increases conduction speed and are primarily found in white matter.

3. Interneurons are located within the central nervous system and play a crucial role in information processing and communication between sensory and motor neurons. They integrate and interpret signals, allowing for complex responses and modulation of neuronal activity.

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under most biological conditions, histidine is considered to be a triprotic acid. which of the following functional groups have pka values much higher than the ph values typically found in a cell?

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Among the functional groups in histidine, the pKa values of the following groups are generally much higher than the pH values typically found in a cell: Imidazole ring, Carboxyl group, and Amino group.

Under most biological conditions, histidine is considered to be a triprotic acid, meaning it can donate three protons (H+ ions). The pKa values of the functional groups in histidine determine their protonation states at different pH levels. The pKa values of the following groups are generally much higher than the pH values typically found in a cell:

1. Imidazole Ring: The imidazole ring in histidine contains two nitrogen atoms that can act as bases and accept protons. The pKa values of the imidazole nitrogen atoms are around 6.0 and 9.2. These pKa values are higher than the pH range typically found in a cell, which is around 6.5-7.5. Therefore, at physiological pH, both nitrogen atoms of the imidazole ring are mostly protonated.

2. Carboxyl Group: The carboxyl group in histidine, similar to other carboxyl groups in amino acids, has a pKa value of around 2.2. This pKa value is significantly lower than the pH range found in a cell. As a result, the carboxyl group of histidine is typically deprotonated (negatively charged) under physiological pH conditions.

3. Amino Group: The amino group in histidine, similar to other amino groups in amino acids, has a pKa value of around 9.0-9.7. This pKa value is higher than the pH range typically found in a cell. Therefore, the amino group of histidine is mostly protonated (positively charged) under physiological pH conditions.

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Which statement best describes the relationship between prophase and telophase?
a. Prophase is the final stage of mitosis, while telophase is the initial stage.
b. Prophase and telophase are both stages of meiosis.
c. Prophase is the stage where chromosomes condense, while telophase is the stage where they decondense.
d. Prophase and telophase are unrelated stages in the cell cycle.

Answers

The correct option is (c). Telophase is the final stage of both meiosis and mitosis. This is the point at which chromosomes have finished moving toward opposite poles, with cytokinesis following to fully separate the two daughter cells.

Telophase is the final stage of both meiosis and mitosis. This is the point at which chromosomes have finished moving toward opposite poles, with cytokinesis following to fully separate the two daughter cells. When the cell cycle in meiosis ends, cytokinesis occurs to create two haploid daughter cells, each containing half of the original cell's chromosomes. The correct answer is c. Prophase is the stage where chromosomes condense, while telophase is the stage where they decondense. Meiosis is a process of cell division in which the number of chromosomes in the cell is reduced by half through the separation of homologous chromosomes, producing four haploid cells. Telophase is the final stage of both meiosis and mitosis. This is the point at which chromosomes have finished moving toward opposite poles, with cytokinesis following to fully separate the two daughter cells. When the cell cycle in meiosis ends, cytokinesis occurs to create two haploid daughter cells, each containing half of the original cell's chromosomes. Prophase, the first stage of mitosis, is characterized by the condensation of chromatin into discrete chromosomes that are visible under a light microscope. A spindle apparatus also forms, consisting of microtubules and associated proteins. The spindle is responsible for the separation of chromosomes during the later stages of mitosis. The nuclear envelope also begins to break down during prophase, allowing the spindle to attach to the chromosomes. In summary, prophase and telophase are two critical stages in the process of mitosis. Prophase is the stage at which the chromosomes condense and the spindle begins to form, while telophase is the stage at which the chromosomes decondense, and the spindle breaks down.

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sciencebiologybiology questions and answerswhich of the following is/are true of a bacteriophage entering the lysogenic cycle? group of answer choices it is called a temperate phage upon incorporation into the host genome, it is referred to as a provirus upon incorporation into the host genome, it is referred to as a prophage all of these are correct
Question: Which Of The Following Is/Are True Of A Bacteriophage Entering The Lysogenic Cycle? Group Of Answer Choices It Is Called A Temperate Phage Upon Incorporation Into The Host Genome, It Is Referred To As A Provirus Upon Incorporation Into The Host Genome, It Is Referred To As A Prophage All Of These Are Correct
Which of the following is/are true of a bacteriophage entering the lysogenic cycle?
Group of answer choices
it is called a temperate phage
upon incorporation into the host genome, it is referred to as a provirus
upon incorporation into the host genome, it is referred to as a prophage
all of these are correct

Answers

The true statement of Bacteriol phage entering the lysogenic cycle is  it is known as a temperate phage upon joining into the host genome, Option A is correct.

Phage DNA is incorporated into the host genome during the lysogenic cycle, where it is transmitted to subsequent generations. The pro-phage may enter the lytic cycle and excise in response to environmental stressors like starvation or exposure to harmful chemicals. Prophages or temperate phages are lysogeny-capable phages.

"Bacteriophages," or "phages" for short, are viruses that specifically infect bacteria. Lysogeny is typically characterized by the insertion of the viral genome into the host genome or another cell replicon (e.g., plasmid). These viruses are not living organisms but are a major contributor to the ecosystem.

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Complete question as follows :

which of the following is/are true of a Bacteriol phage entering the lysogenic cycle? group of answer choices

A. it is called a temperate phage upon incorporation into the host genome,

B. it is referred to as a pro virus upon incorporation into the host genome,

C.  it is referred to as a pro phage

D.  all of these are correct

There are three major considerations (or conditions) that if met would make a species an invasive alien species. List these three considerations. As discussed, recall that the third criterion has two components: Invasiveness and Invasibility. Define the terms "Invasiveness" and "invasibility". Illustrate each term with an example.

Answers

There are three major considerations (or conditions) that if met would make a species an invasive alien species. These three considerations are: It is not native to the ecosystem in which it is discovered. It spreads quickly and aggressively, taking over the territory of native plants and animals. It causes environmental damage, either by outcompeting native species for resources or by altering ecosystem processes.

Invasiveness: Invasiveness is the ability of an alien species to establish and spread in a new location beyond its natural range. It implies a measure of success for a species in an area that has been invaded. The invasion of European rabbits in Australia is an excellent example of invasiveness. They were brought to Australia for food in the 19th century, and their numbers have since increased dramatically.

Invasibility: Invasibility is the susceptibility of an ecosystem or habitat to invasion by alien species. It implies the potential for a species to succeed in a new location if introduced. Invasibility is affected by a variety of factors, including the availability of unoccupied niches, low levels of disturbance, and the absence of natural enemies. An example of invasibility can be illustrated by the North American bullfrog, which is found in several aquatic habitats in Europe, where it has no natural enemies.

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• Two organisms that cope with difficult physical conditions through acclimatization.
• Two organisms that cope with difficult physical conditions through adaptation.
• Two organisms that avoid difficult physical conditions through a behavioral change.
• Two organisms that avoid difficult physical conditions through a metabolic change.

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After considering the given data we conclude that two organisms that cope with difficult physical conditions through ;
a) acclimatization are Human and rattle snake.

b)adaptation are Camels and Polar bears
c) behavioral change are Birds and Snakes
d) metabolic change are fish and bacteria

a) Two organisms that cope with difficult physical conditions through acclimatization are:
Humans acclimatize to high altitudes by increasing their production of red blood cells to compensate for the lower oxygen levels.
Desert animals like rattle snake acclimatize to high temperatures by becoming more active at night when it is cooler and conserving water during the day.
b) Two organisms that cope with difficult physical conditions through adaptation are:
Camels have adapted to life in the desert by having long eyelashes and nostrils that can close to protect against sand, and the ability to store water in their humps.
Polar bears have adapted to life in the Arctic by having thick fur and a layer of blubber to insulate against the cold, and large paws to help them walk on ice.
c) Two organisms that avoid difficult physical conditions through a behavioral change are:
Birds migrate to warmer climates during the winter to avoid the cold and lack of food.
Snakes hibernate during the winter to avoid the cold and conserve energy.
d) Two organisms that avoid difficult physical conditions through a metabolic change are:
Some fish can produce antifreeze proteins in their blood to prevent ice crystals from forming in their bodies in cold water.
Certain bacteria can use chemosynthesis to produce energy from chemicals in the absence of sunlight, allowing them to survive in deep sea vents where there is no light.
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The complete question is
Name :

• Two organisms that cope with difficult physical conditions through acclimatization.
• Two organisms that cope with difficult physical conditions through adaptation.
• Two organisms that avoid difficult physical conditions through a behavioral change.
• Two organisms that avoid difficult physical conditions through a metabolic change.

in an unpreserved and old urine specimen, there could be difficulty differentiating between bacteria and:

Answers

In an unpreserved and old urine specimen, there could be difficulty differentiating between bacteria and yeast.

When an unpreserved urine specimen is left for an extended period of time, it undergoes various changes due to the growth of microorganisms and degradation of cellular components. Bacteria and yeast are two types of microorganisms that can be present in urine.

Bacteria are typically the most common microorganisms found in urine specimens. They can multiply rapidly in urine that is left at room temperature for an extended period.

In fresh urine samples, bacteria can be identified through microscopic examination and culture techniques.

However, in old and unpreserved urine specimens, bacteria can undergo autolysis and lose their characteristic features, making it difficult to differentiate them from other microorganisms.

Yeast, specifically Candida species, is another type of microorganism that can be present in urine. Like bacteria, yeast can grow and multiply in unpreserved urine specimens over time.

However, yeast cells are larger than bacteria and can exhibit morphological characteristics such as budding or pseudohyphae, which can aid in their identification.

Therefore, in an unpreserved and old urine specimen, the differentiation between bacteria and yeast may become challenging due to the autolysis of bacteria and the potential alteration of yeast morphology.

Proper preservation and timely analysis of urine specimens are essential to ensure accurate identification of microorganisms.

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Sea Lions can be readily distinguished from the seals because in contrast to seals they have:
External Ears
Have Hair and produce milk
Sperm

Answers

Sea lions can be distinguished from seals by their possession of external ears, among other physical differences. These two types of pinnipeds have unique adaptations and behaviors worth exploring and studying further. Here option C is the correct answer.

Sea lions can be readily distinguished from seals by the presence of external ears. While both sea lions and seals belong to the pinniped family, sea lions possess visible external ear flaps, also known as pinnae, on the sides of their heads. In contrast, seals lack external ears, and their ear openings are not easily noticeable.

Apart from the distinction in their auditory structures, sea lions and seals also differ in other ways. Both sea lions and seals have hair and produce milk, as they are mammals. They are warm-blooded and have adaptations for aquatic life. However, sea lions generally have longer flippers and are more adapted for life on land, as they can rotate their hind flippers forward to aid in movement on land. Seals, on the other hand, have shorter, stiffer flippers, making them more maneuverable in water.

It is important to note that sea lions and seals are both fascinating marine creatures with distinct characteristics and further exploration and study can provide a deeper understanding of their unique adaptations and behaviors.

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Complete question:

Sea Lions can be readily distinguished from seals because in contrast to seals they have:

A - External Ears

B - Have Hair and produce milk

C - Sperm

Which one of the following aquifers would be best for purifying groundwater that is contaminated with harmful sewage bacteria?
Group of answer choices
a. highly fractured granite
b. coarse gravel with few small grains
c. sand
d. cavernous limestone

Answers

The best source of water would be the sand aquifer. The pollutants would be more likely to come into contact with grain surfaces and be absorbed or chemically destroyed as the water would travel more slowly.  Hence (c) is the correct option.

Faster groundwater recharge rates are found in sedimentary rocks like sandstone and limestone. Because these particular rocks have interconnected pore spaces, they produce the ideal aquifers. Water can readily pass through when it rains. Unconsolidated substances like gravel, sand, and even silt, as well as rocks like sandstone, can create reasonably effective aquifers. If other rocks are well broken, they can make good aquifers. Aquifers of sand and gravel that are not contained are more susceptible to pollution.

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Which one of the following aquifers would be best for purifying groundwater that is contaminated with harmful sewage bacteria?

Group of answer choices

a. highly fractured granite

b. coarse gravel with few small grains

c. sand aquifer

d. cavernous limestone

A nurse is caring for a patient hospitalized with an exacerbation of chronic gastritis. What health promotion topic should the nurse emphasize? A) Strategies for maintaining an alkaline gastric environment B) Safe technique for self-suctioning C) Techniques for positioning correctly to promote gastric healing D) Strategies for avoiding irritating foods and beverages

Answers

The nurse should emphasize strategies for avoiding irritating foods and beverages to avoid chronic gastritis. Therefore, option D is correct.

Chronic gastritis is characterized by inflammation of the stomach lining. Certain foods and beverages can further irritate the stomach lining, worsening the symptoms and exacerbating the condition. Providing education on dietary modifications and avoiding trigger foods can help reduce inflammation and promote the healing of the gastric mucosa.

The nurse can provide guidance on foods and beverages to avoid, such as spicy or acidic foods, alcohol, caffeine, and high-fat foods.

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the pectoral girdle and pelvic girdle are constructed similarly, yet the pectoral girdle is designed for mobility while the pelvic girdle is designed for stability. do you have any thoughts about how the anatomy allows this to happen?

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The pelvic girdle and pectoral girdle are two of the most significant bone structures that support the body and provide the backbone for many bodily functions.

The pelvic girdle and pectoral girdle are two of the most significant bone structures that support the body and provide the backbone for many bodily functions. Although both girdles have a similar structural shape, the pectoral girdle is designed to provide maximum mobility, while the pelvic girdle is built for stability.The design and anatomy of the pelvic girdle allow it to provide excellent support for the lower abdomen and maintain stability in the pelvis. The pelvic girdle, also known as the hip bone, is constructed in a ring-like structure that comprises several bones, including the ilium, pubis, and ischium bones. The ring-like structure and the large surface area of the bones provide ample support to the body while allowing only a minimal amount of mobility.In contrast, the pectoral girdle is designed to provide a vast range of motion to the upper body. The anatomy of the pectoral girdle includes the clavicle and scapula bones. The clavicle bone connects the sternum and scapula bones, allowing for a wide range of movement in the shoulders. The scapula bone, also known as the shoulder blade, is attached to the humerus bone, enabling the arm's movement.The pectoral girdle and pelvic girdle have the same structural shape, but they are anatomically designed for specific purposes. The pelvic girdle is designed to provide stability while limiting movement, whereas the pectoral girdle is built to enable a broad range of movement.

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Which of the following amino acid SIDE CHAINS can form hydrogen bonds? (check all that can)
O Threonine
O Valine
O Tyrosine
O Serine
O Asparagine
O Phenylalanine
O Leucine
O Alanine
O Isoleucine
O Glycine

Answers

The amino acid side chains that can begin hydrogen bonds are Threonine (a), Tyrosine (c), Serine (d), and Asparagine (e).

These amino acids feature side chains that include oxygen (O) atoms that can engage in hydrogen bonding.

Because the hydroxyl groups in serine and threonine's side chains are polar and near the main chain, they can establish hydrogen bonds with the main chain.

Many amino acids have groups in their side chains where an oxygen or nitrogen atom is joined by a hydrogen atom. This is a typical circumstance where hydrogen bonding can take place. For instance, the side chain of the amino acid serine has a -OH group.

Four residues—Thr, Ser, Asp, and Asn—have a particularly great propensity to establish hydrogen bonds with nearby residues, according to a study of 322 proteins.

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Q- Which of the following amino acid SIDE CHAINS can form hydrogen bonds? (check all that can)

a. Threonine

b. Valine

c. Tyrosine

d. Serine

e. Asparagine

f.  Phenylalanine

g. Leucine

h. Alanine

i.  Isoleucine

j.  Glycine

loading up on sugar___ is advisable before a speech because it gives you quick energy

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Loading up on sugar is not advisable before a speech because it gives you quick energy.

Sugar is a crystalline carbohydrate that is sweet to the taste. Sugars that are commonly used in foods include glucose, fructose, and sucrose. Sugars can be found naturally in fruits and vegetables, as well as honey, while others, such as high fructose corn syrup, are frequently added to prepared foods. Although consuming sugar can provide a quick burst of energy, it is not recommended to load up on sugar before giving a speech.

When you consume a lot of sugar, your body responds by releasing insulin to break it down. The insulin then causes a drop in blood sugar levels, resulting in a drop in energy. This can cause tiredness, confusion, and difficulty concentrating, which are all the opposite of what you want when giving a speech.

Instead, a balanced meal consisting of complex carbohydrates, protein, and healthy fats is a better option for providing sustained energy and focus during a speech.

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The energy expenditure associated with food digestion and absorption is the
basal metabolic rate (BMR).
thermic effect of food (TEF).
resting metabolic rate (RMR).
respiratory exchange ratio (RER).

Answers

"The energy expenditure associated with food digestion and absorption is the thermic effect of food (TEF)."

Energy expenditure refers to the number of calories that a person burns in a day as a result of their daily routine. Energy expenditure involves the amount of energy a person uses when they are resting and when they are doing physical activity.

Food digestion is a process where food is broken down into small molecules by the digestive system. The body then absorbs these molecules to provide nutrients and energy.

The thermic effect of food (TEF) refers to the increase in energy expenditure associated with food digestion and absorption. When you eat food, your body has to work to break it down and absorb the nutrients, which results in an increase in energy expenditure.

Energy represents the total energy used by the body for various physiological functions, including basal metabolic rate (BMR), physical activity, and the thermic effect of food (TEF).

1. Basal Metabolic Rate (BMR): BMR is the energy expended by the body at rest to maintain essential physiological functions such as heart rate, breathing, and organ function. It represents the energy required to sustain life and accounts for the largest proportion of total energy expenditure (typically around 60-75%).

2. Physical Activity: Energy expenditure associated with physical activity includes any bodily movement, such as exercise, walking, housework, or occupational tasks. This component can vary widely depending on the individual's activity level, duration, and intensity of exercise, and can contribute significantly to overall energy expenditure.

3. Thermic Effect of Food (TEF): As mentioned earlier, TEF is the energy expenditure associated with the digestion, absorption, and metabolism of nutrients after a meal. It accounts for a small portion of total energy expenditure (typically around 10% of the calories consumed).

These three components (BMR, physical activity, and TEF) together make up the total daily energy expenditure (TDEE) of an individual. It is important to note that energy expenditure can vary among individuals due to factors such as age, sex, body composition, genetics, and overall health.

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A protein is composed of 6 subunits. Two have a molecular weight of 55 kDa, two have a molecular weight of 75 kDa, and 3 have a molecular weight of 95 kDa. How many bands should you see on a native polyacrylamide gel stained with Coomasie Blue? Please explain

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You would see one band on the gel due to the protein's total molecular weight of 545 kDa.

The protein is composed of 6 subunits with varying molecular weights: 2 subunits at 55 kDa, 2 subunits at 75 kDa, and 3 subunits at 95 kDa. By summing the molecular weights of all subunits, we find the protein's total molecular weight to be 545 kDa. On a native polyacrylamide gel, proteins separate based on size and shape.

Given the large size of this protein, it is expected to migrate as a single band on the gel. Staining the gel with Coomassie Blue would allow the visualization of this single band representing the protein.

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the subject feel a difference when winning or losing a match? is there a correlation between what the subject ""feels"" and what is seen for the amount of emg activity?

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Yes, the subject does feel a difference when winning or losing a match and there is a correlation between what the subject "feels" and what is seen for the amount of EMG (electromyography) activity.

What is electromyography (EMG)?

EMG or electromyography is a diagnostic tool used to examine the activity of the muscles and the nerves in the body. It can detect muscle weakness or abnormal nerve function.The correlation between EMG activity and feelings during winning or losing a match: The muscle activity measured by EMG depends on the activity that the muscle is carrying out. The amount of muscle activity will be greater when the person is putting more effort into the action.

Therefore, it is expected that the amount of EMG activity will be higher when the subject is trying to win than when they are losing. As a result, winning or losing a match is related to the amount of EMG activity. It is possible to correlate what the subject "feels" to what is seen for the amount of EMG activity. When winning, the subject will "feel" a sense of accomplishment and their muscles will show greater EMG activity than when losing.

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Which of the following mutations would be MOST likely to be retained in a species gene pool?

A) A mutation resulting in a deleterious change in a cytoskeletal protein structure.

B) A mutation in an exon of a gene coding for DNA repair.

C) A mutation in an intron of a gene coding for DNA repair.

D) Both A and B.

E) None of the above.

Answers

A mutation resulting in a deleterious change in a cytoskeletal protein structure would not be most likely to be retained in a species gene pool.

A mutation is a change that occurs in the DNA sequence that makes up a gene. Which of the following mutations would be MOST likely to be retained in a species gene pool? A mutation in an exon of a gene coding for DNA repair would be most likely to be retained in a species gene pool. DNA repair mechanisms are critical for maintaining the stability of the genome, as they protect against DNA damage caused by environmental stressors and DNA replication errors. These processes are required for survival and reproduction, implying that mutations that improve DNA repair mechanisms are likely to be maintained in a population's gene pool. Mutations that impair DNA repair, on the other hand, would be likely to decrease in frequency over time since they would result in a higher likelihood of genomic instability and potentially fatal mutations. Mutations in cytoskeletal proteins, introns of a gene, and in other regions may have a variety of consequences, but they are unlikely to be as crucial for survival and reproduction as mutations in DNA repair genes. Therefore, A mutation resulting in a deleterious change in a cytoskeletal protein structure would not be most likely to be retained in a species gene pool.

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What urinalysis results would you expect for someone being treated for a bacterial infection like strep throat, assuming he or she follows the doctor's orders? What is your reasoning for each factor? Doctor's orders: amoxicillin, 2x/day; lots of bed rest; drink lots of fluids. Factor Result Reasoning Color pH Specific Gravity Glucose

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A urinalysis is an examination of urine to identify any abnormalities and evaluate overall health. To know what urinalysis results you would expect for someone being treated for a bacterial infection like strep throat, assuming he or she follows the doctor's orders of amoxicillin, 2x/day; lots of bed rest; and drink lots of fluids.

There are several factors to consider:

Color: Normal urine color is pale to yellow. The color may be deeper if the individual is dehydrated. Since bed rest and drinking plenty of fluids is part of the doctor's orders, it is expected that urine will be pale to yellow with no abnormal colors.pH: The pH level of urine is usually slightly acidic, ranging from 4.5 to 7.5. The pH can vary depending on the diet, medications, and health condition of the individual. Bacteria, such as those causing a strep infection, can make the urine more alkaline. However, since the individual is following the doctor's orders, amoxicillin is expected to kill the bacteria and restore the normal pH level.Specific Gravity: Specific gravity measures how much solid material is dissolved in urine. A low specific gravity indicates that the urine is too diluted, while a high specific gravity indicates that the urine is too concentrated. Specific gravity ranges from 1.002 to 1.030. Dehydration can cause a high specific gravity, while overhydration can cause a low specific gravity. The doctor's orders of drinking plenty of fluids will result in a normal specific gravity level.Glucose: A healthy individual's urine does not contain glucose. However, if the individual has diabetes, the urine may contain glucose. This is not related to bacterial infections like strep throat. Therefore, since the individual is following the doctor's orders, the glucose level in the urine is expected to be normal.

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white blood cells are most closely associated with which two body systems?

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White blood cells (WBCs) are most closely associated with the lymphatic and immune systems. These cells are important for defending the body against harmful microorganisms and foreign substances.

The lymphatic and immune systems work together to produce, store, and transport these cells throughout the body.The lymphatic system is a network of vessels, tissues, and organs that help maintain fluid balance in the body and defend against infections. White blood cells, particularly lymphocytes, are produced and stored in the lymphatic system, specifically in the lymph nodes, spleen, and thymus gland. The lymphatic system also helps remove waste products and excess fluids from tissues.

The immune system is responsible for protecting the body against foreign invaders such as bacteria, viruses, and fungi. White blood cells, particularly leukocytes, are an essential component of the immune system. These cells recognize and attack foreign substances in the body, either by engulfing and destroying them or by producing antibodies that can neutralize them.

Overall, white blood cells play a crucial role in maintaining the health of both the lymphatic and immune systems. They help defend the body against infections and other harmful substances, and are an essential component of the body's defense mechanisms.

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Which of the bones listed below does not contain air sinuses?
A) the frontal bone
B) the ethmoid
C) the maxilla
D) the mandible

Answers

The mandible (D) is the bone that does not contain air sinuses.

Bones are hard mineral structures that make up the skeleton of vertebrates. They offer both the framework for the body and protection for delicate internal organs such as the brain, spinal cord, and heart.

The air-filled spaces in the bones of the skull are known as air sinuses. The sinuses that are found within the facial bones are referred to as the paranasal sinuses. The sinuses have a number of functions, including decreasing the overall weight of the skull, humidifying and heating the air entering the body, and resonating during speech to amplify the sound.

Based on the given options, the answer would be option D) the mandible. The mandible is a facial bone, but it does not contain air sinuses. The other three bones listed - the frontal bone, the ethmoid, and the maxilla - all include air sinuses.

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a fallen, decaying created order still needs to be stewarded carefully because

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"A fallen, decaying created order still needs to be stewarded carefully because it impacts our lives and the world we inhabit." Even in a state of decline, the natural environment, social structures, and human systems continue to shape our experiences and well-being.

1. Environmental Stewardship: A decaying created order often refers to the deteriorating state of the natural world, including ecosystems, biodiversity, and climate. Even though the environment may be suffering, it still requires careful stewardship to mitigate further damage, protect remaining resources, and support ecological restoration. Responsible management of land, water, and energy resources can help minimize the negative impacts on both current and future generations.

2. Social Responsibility: In a decaying created order, social structures and institutions may exhibit signs of deterioration, inequality, and injustice. However, it is crucial to steward these systems with care. By promoting equality, justice, and inclusivity, we can work towards creating a more just society. Advocacy for marginalized communities, fair distribution of resources, and fostering a sense of community are essential for the well-being of individuals and the overall social fabric.

3. Preservation of Knowledge and Culture: Even as the created order decays, the preservation of knowledge, history, and cultural heritage becomes increasingly important. Cultural artifacts, traditions, and wisdom can provide insights into our past, inform our present, and shape our future. By stewarding and safeguarding these aspects, we ensure the continuity of our collective identity and enable future generations to learn from and build upon the achievements and mistakes of the past.

4. Ethical Considerations: Despite the fallen state of the world, ethical principles and moral values remain relevant. Stewarding a decaying created order requires making conscious choices that align with ethical frameworks, such as respect for life, human dignity, and sustainability. Ethical decision-making can guide us in navigating complex challenges, promoting compassion, and fostering a sense of responsibility towards others and the environment.

5. Hope and Transformation: By carefully stewarding a decaying created order, we can foster hope and work towards transformation. Even small actions can have ripple effects and contribute to positive change. By preserving and restoring the environment, promoting social justice, nurturing cultural heritage, and making ethical choices, we can sow the seeds of renewal and inspire others to join in creating a better future.

In summary, stewarding a fallen, decaying created order is essential because it allows us to mitigate further damage, promote social well-being, preserve knowledge and culture, uphold ethical principles, and work towards transformation and hope. Despite the challenges, responsible stewardship can lead us on a path towards a more sustainable, just, and thriving world.

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