Answer:
Carbohydrates
Explanation:
The concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists. Evolution by way of natural selection is most likely which type of concept?
Evolution by way of natural selection is an accepted hypothesis based on repeated experimental procedures having similar results.
What is a hypothesis?A hypothesis is an explanation about a given process observed in the real world that can be tested by the scientific method.
The hypotheses can become theories when they are repeatedly tested and verified as occurred with the evolution by natural selection.
In conclusion, Evolution is an accepted hypothesis based on repeated experiments.
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Describe how the burning of fossil fuels affect the carbon cycle
What is a benefit of using active solar energy over utility-scale solar energy for a home?
Installation costs are less with active solar systems.
Homeowner is not responsible for installation costs.
Energy comes from the active system, not a grid.
Homeowners will see less cost savings over time.
Your home's solar energy system can help you save money on you electricity bill and lessen your dependency on the grid.
Is solar power a good source of power?In order to protect people, wildlife, and ecosystems, it is imperative that greenhouse gas emissions are reduced and climate change is mitigated. Solar energy plays a significant part in this as a renewable source of energy. Moreover, solar energy can reduce water use in energy generation and enhance air quality.
Solar panels' lifespan is how long?Most solar panels last between 25 to 30 years, which is the industry average. A 25-year or longer production warranty is typically provided by reliable manufacturers.
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regulate blood flow into the capillary bed and respond to local chemical conditions. If the tissue is metabolically active, they would _________________________ in diameter to allow flow into the tissue. If the tissue is not metabolically active, they would _________________________ in diameter and blood would be __________________________ through the capillary bed. What are the changes in the tissues and what is a byproduct when there is active metabolism
Pre capillary sphincters regulates the blood flow into the capillary bed and respond to local chemical conditions. If tissue is metabolically active they would increase in diameter to allow flow into the tissue. If the tissue is not metabolically active they would decrease in diameter and blood flow would be decreased through the capillary bed.
When the metabolism is operating, changes are created.
1. An increase in adenosine concentration
2. a rise in carbon dioxide levels there.
3. A rise in lactic acid levels.
4. A high pH.
5. A decrease in oxygen content
After the tissue has been removed, the metabolism of the tissue slows down. The recorded variances must take these potential variables into consideration because the temperature drops often. The tissue may be stabilized in a live condition in vitro if it is sustained by temperature and perfusion systems.learn more about tissue metabolism here: https://brainly.com/question/14422941
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Pre-capillary sphincters regulate the blood flow into the capillary bed and respond to local chemical conditions. If tissue is metabolically active it would increase in diameter to allow flow into the tissue. If the tissue is not metabolically active it would decrease in diameter and blood flow would be decreased through the capillary bed.
What are Pre-capillary sphincters?A precapillary sphincter is a band of pericytes or smooth muscle-like contractile mural cells that regulates blood flow into capillaries. They were once believed to solely exist in the mesenteric microcirculation, where they had been first described.
Changes take place while the metabolism is active.
A rise in the level of adenosineA spike in the area's carbon dioxide levels.An increase in blood lactate levels.A high pH. A drop in oxygen concentrationThe tissue's metabolism slows down after it has been removed.
Since the temperature drops frequently, the reported variations must take these potential variables into account.
If the tissue is maintained via temperature and perfusion systems, it may be stabilized in a living state in vitro.
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If ____________ is present in chyme, it can interfere with the recycling of used bile salts. As a result, the used bile salts are ____________ in ____________ .
If soluble fibers is present in chyme, it can interfere with the recycling of used bile salts. As a result, the used bile salts are eliminated in feces.
Oats, flaxseed, barley, psyllium, and pectin are examples of soluble fiber. Among the insoluble fibers are wheat bran, lignin's, and cellulose. Bile salts are eliminated more quickly from the body as a result of soluble fibers binding bile acids in the colon. As a result, the liver's ability to produce bile acids is enhanced.Additionally, soluble fiber binds to bile acids to stop them from being absorbed into the body. 'As a result of the liver using more of the blood's cholesterol to make more bile acids, less cholesterol is present in the bloodstream. and the bile salts gets eliminated in the feces.learn more about bile salts here: https://brainly.com/question/15217814
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Leakage of lpg can be deleted by a person from a distance . name the process and write two applications of this process in our day to day life
Answer:
Explanation:
LPG gas is basically propane and butane, and it is odourless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called Ethyl Mercaptan (C2H6S). This substance is added to the gas when it leaves the main storage terminals.
If you were told that you would get extra credit for finding a model showing chromsomes separating while sister chromatids were still attached, you would look for a model of
Answer:
anaphase
Explanation:
Mitosis or meiosis with cohesion proteins still holding sister chromatids together during anaphase.
If I were given additional credit for discovering a model of chromosomes splitting when sister chromatids were still linked, I would seek for a mitotic model in early anaphase. Sister chromatids, duplicated chromosomes, separate and move to opposing cell poles in anaphase, the third stage of mitosis.
Early anaphase sister chromatids are still joined at the centromere region, giving the impression of being attached while separating. This model shows how chromosomal segregation ensures precise genetic material distribution to daughter cells during cell division. Maintaining cell genetic integrity requires this phase.
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What is the primary source of energy in a food chain?
oxygen
sun
carbon dioxide
water
Answer:
The sun is the primary source of energy in a food chain.
Explanation:
By having sun light shining directly onto plants, it causes the plants to produce chemical energy that is able to sustain all their cellular functions.
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Hyperthyroidism Hyperthyroidism decreases protein synthesis. slows heart rate. decreases oxygen consumption. causes cold intolerance. increases protein catabolism.
Hyperthyroidism decreases protein synthesis, increases heart rate, increases oxygen consumption, and increases protein catabolism.
What is Hyperthyroidism and its effect on the body?Hyperthyroidism occurs when the thyroid gland produces too much of the hormone thyroxine.Hyperthyroidism can accelerate body metabolism, causing unintentional weight loss and a rapid or irregular heart rate.Hyperthyroidism is the catabolic state with increased energy expenditure, lipolysis, and protein turnover.Increased protein turnover includes increased protein breakdown and reduced serum protein level.Hyperthyroidism increases oxygen consumption to meet the body's requirements due to increased basal metabolic rate.To learn more about Thyroidisms,
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Sexual dimorphism Group of answer choices refers to differences between adults and adolescents with regard to sexual behavior. is particularly pronounced in all primate species. refers to differences between the sexes with regard to features such as body size. has not been observed in ANY monkey.
Sexual dimorphism b. refers to differences between the sexes with regard to features such as body size.
Sexual dimorphism describes the morphological, physiological, and behavioral variations between males and females of identical species.
Sexual dimorphism, or the morphological and behavioral differentiation of the two sexes of an equal species, is massive in nature. Intercourse-limited trends are manufactured from sex-limited gene expression.
Many animal behaviors range between the sexes and are consequently called sexually dimorphic (dimorphic approach having bureaucracy). maximum of these sexually dimorphic behaviors are a part of the reproductive repertoire. An excellent example is plain in songbirds.
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Although Mendel did not know that random orientation of homologous chromosome pairs during metaphase I leads to random allele combinations of different genes in gametes, he created the law of
Although Mendel did not know that random orientation of homologous chromosome pairs during metaphase I lead to random allele combinations of different genes in gametes, he created the law of Independent Assortment.
Law of Independent AssortmentMendel's law of Independent Assortment variety expresses that the alleles of (at least two) unique qualities get arranged into gametes freely of each other. All in all, the allele a gamete gets for one quality doesn't impact the allele got for another quality.Mendel was performing dihybrid crosses, which are crosses between creatures that contrast with respect to two attributes. He found that the blends of qualities in the posterity of his crosses didn't necessarily in every case match the mixes of attributes in the parental living beings. From his information, he figured out the Law of Independent Assortment.
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A researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a gametophyte generation, but lacks seeds. How should the researcher classify the plant?
The plant contains vascular tissue and has an alternation of generation. But, it lacks seeds. So, the plant is a Pteridophyte.
Vascular tissues are absent in thallophytes and bryophytes. They are found in pteridophytes, gymnosperms and angiosperms. The sporophyte and gametophyte generation is common in bryophytes and pteridophytes. Seeds are produced in plants that come under the group gymnosperms and angiosperms. The presence of seeds is the main characteristic of these groups. Thallophytes, bryophytes and pteridophytes lack seeds. The reproduction in plants that comes under these groups occurs with the help of spores.Thus, the recently discovered species of the plant should be classified based on the presence of vascular tissues, gametophytes and sporophytes. As pteridophytes contain vascular tissues, sporophytes and gametophytes and lack seeds, the plant is a pteridophyte
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I'm struggling to understand how to fill out this table could somebody explain how to do it in this example so I can do it In the future
The table indicates the sequential order of codons in an mRNA sequence, which will be used to add the corresponding amino acids during protein translation.
What is a messenger RNA?A messenger RNA (mRNA) is a single strand sequence of RNA derived from the transcription of a DNA gene sequence.
The linear order of triplets of nucleotides or codons in the mRNA molecules will be used during translation to encode a polypeptide.
For example, the codon AUG (Adenine-Uracil-Guanine) is a start codon of the protein and it is used to add methionine.
In conclusion, the table indicates codons in mRNA used during protein translation.
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A researcher returns from the Amazon River with 10 individuals of a species of fish and establishes a small breeding colony in her laboratory. She maintains the colony for several years (many fish generations), always maintaining the number of adult fish between 10 and 30. She notices that as generations of fish are bred, the reproductive rate decreases. What is the most likely reason for this
Answer:
make me brainliest hope it helps :)
Explanation:
environmental reason such as food give organisms ore energy for them to reproduce or revolutionise.
DNA Group of answer choices contains the base uracil. contains six different nucleotide bases. is single stranded. directs cellular function.
Nucleic acid:
DNA is responsible for directing the cellular function. The nucleic acids are responsible for the storage of genetic information.
The DNA and RNA are the nucleic acids present in an organism. The DNA is the double stranded helix and comprises of sugars, nitrogenous base and a phosphate group. Deoxyribose is the sugar present along with 4 nitrogenous bases which are adenine, guanine, thymine and cytosine. These bases code for proteins which are responsible for carrying out range of activities such as cell growth, cell division and cell signalling.
RNA has ribose sugar and 4 nitrogenous base. Thymine is replaced by uracil in RNA. There are three types of RNA: rRNA, mRNA, and tRNA.
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DNA (deoxyribonucleic acid) is a polynucleotide that directs cellular function.
There are two nucleic acids found in living beings, DNA and RNA. DNA is the genetic material in most organisms excluding some viruses that may contain RNA as their genetic material. DNA contains certain nucleotide sequences that encode proteins and are called genes. These proteins are important for the maintenance and functioning of the cell.
A DNA molecule contains four nucleotide bases, adenine, guanine, cytosine, and thymine. It is a double-stranded molecule. Uracil is a nitrogenous base in RNA molecules that are single-stranded in structure.
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Carotenoids and Vitamin A both require _________________ in order to be absorbed in the digestive system.
Carotenoids and Vitamin A both require fat in order to be absorbed in the digestive system.
vitamin A and carotenoids :
vitamin A and carotenoids are Fat-soluble micronutrients and they both require fat for the digestion .They are assumed to follow the fate of lipids in the upper gastrointestinal tract , and their absorption presumably occurs in the upper half of the small intestine.
Carotenoids and fat-soluble vitamins are integrated with other lipids into the mixed micelles during digestion, which is likely necessary for the enterocyte to absorb them. Phospholipids, cholesterol, lipid digestion byproducts (including free fatty acids, monoacylglycerols, and lysophospholipids), and bile salts are all components of mixed micelles.
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G
Text Aids
Vocabulary Active
title page table of contents glossary index
Type the Word
litle page
appendix
text ald
Definition
The title page appears at the beginning of a book or document and indicates the title, author's name and editor's name,
and the publication information.
The meaning of the words are:
Title page- The title page appears at the beginning of a book or document and indicates the title, author's name and editor's name, and the publication information.Appendix- It contains supplementary information about the topic of a book.Text Aid- These are educational materials that make emphasis of certain phrases and words and are usually written text and a dictionary, appendix, and title page are all good examples.Definition- The meaning of a word.What is a Title Page?This refers to the page at the beginning of a book that shows the important details of the book such as the content, author's name, etc.
Hence, we can see that there are some words that are necessary for vocabulary building and some of them are listed and their meanings are given above.
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What are organisms that make their own food called?
A. Carnivores
B. Omnivores
C. Consumers
D. Producers
Answer:
producers
Explanation:
producers are organisms such as plants that use energy from the sun to produce their own food through photosynthesis
⊱________________________________________________________⊰
Answer:
producersExplanation:
Organisms that make their own food are called producers.
Carnivores, omnivores, and consumers rely on other organisms for food.
done !!
⊱_______________________________________________________⊰
Cαlligrαρɦγ_____ cells are usually larger than ____ cells
Answer:
prokaryotic Cells eukaryotic cellsExplanation:
mark as brainlest answer
Which hormone promotes the reabsorption of water from the kidneys back into the ecf by osmosis?.
Answer:
antidiuretic hormone
Explanation:
Osmosis is the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane. Antidiuretic hormone is also known as vasopressin. Vasopressin is a peptide hormone, synthesized in the hypothalamus and released by the posterior pituitary gland, that stimulates capillary muscles and reduces the flow of urine and increases its concentration.
Match the following.
(i) Rosetta (a) 64 amino acids
(ii) Marshall Nirenberg (b) Hieroglyph
(iii) Codon table (c) Amino acid phenylalanine
(iv) Codon UUU (d) Synthesized artificial RNA molecule
A. (i) - b, (ii) - d, (iii) - a, (iv) - c
B. (i) - b, (ii) - a, (iii) - c, (iv) - d
C. (i) - a, (ii) - b, (iii) - c, (iv) - d
D. (i) - c, (ii) - d, (iii) - a, (iv) - b
Rosetta is associated with hieroglyph, Marshall Nirenberg is associated with a synthesized artificial RNA molecule, the Codon table is associated with 64 amino acids, and the Codon UUU is associated with the amino acid phenylalanine. The correct option is A.
The name Rosetta is linked to hieroglyphs because of the Rosetta Stone, a well-known artefact that contains writing in Greek, Demotic, and Egyptian hieroglyphs.
Because of his groundbreaking work utilising synthetic RNA to interpret the genetic code and decipher the first codon, Marshall Nirenberg is linked to a synthesised artificial RNA molecule.
The 64 amino acids that make up the codon table represent the various three-letter codon combinations that are used in the genetic code to code for various amino acids.
Because the codon UUU determines the inclusion of phenylalanine during protein synthesis, it is connected to the amino acid phenylalanine.
Thus, the correct option is A.
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Homologous chromosomes ________. Homologous chromosomes ________. carry genes controlling the same inherited characteristics carry the same versions of all genes are a set of chromosomes received from one parent during sexual reproduction
Homologous chromosomes carry genes controlling the same inherited characteristics carry the same.
Homologous chromosomes are matched pairs containing the same genes in equal locations alongside their period. Diploid organisms inherit one copy of every homologous chromosome from every discern; Altogether, they may be considered a complete set of chromosomes.
Homologous and non-homologous chromosomes are the 2 forms of chromosomes diagnosed primarily based on the pairing sample of chromosomes for the duration of metaphase 1 of meiosis. Homologous chromosomes discuss with the chromosomes in the identical pair even as non-homologous chromosomes check with the chromosomes in one-of-a-kind pairs.
Each chromosome from homologous chromosome pair is inherited from each discern wearing the same genes within the identical order. As they're from distinctive individuals, homologous chromosomes aren't identical.
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The energy release from sequential redox reactions provides energy to cells most directly by: Group of answer choices Using that energy to pump protons Using that energy to rotate the flagella Using that energy to phosphorylate compounds Using that energy to create carbon compounds
The energy release from sequential redox reactions provides energy to cells most directly by Using that energy to pump protons.
By transferring electrons during chemical reactions, catabolic pathways break down organic molecules, generating energy that is then used to produce ATP.In an oxidation-reduction (redox) reaction, the process of losing electrons (making a chemical more positive) is referred to as oxidation, while the process of gaining electrons (making a substance more negative) is referred to as reduction.The inner mitochondrial membrane's electron transport chain receives electrons from NADH and FADH2, which causes an H+ accumulation in the inner membrane space. The direct energy source for ATP synthesis is this proton gradient (gradient of H+) flowing via the membrane enzyme complex ATP synthetase.learn more about redox reactions here: https://brainly.com/question/10488067
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I don't know how to draw graphs please help!
Lab #10: Modeling Populations
Background Information:
Scientists researching different areas of ecology may study organisms at different levels. Use the activity below about a model population of African lions to complete a lab write up as if you were studying this population.
• Bio Interactive: African Lions: Modeling Populations
Problem: What factors can influence how populations change over time?
Hypothesis: If a population is given unlimited amounts of food, moisture, oxygen, and multiple other environmental factors, it will show exponential growth.
Method: Follow all directions in the activity. Answer the questions as you complete the activity both online and on the worksheet that you will submit.
Results:
1. Draw a graph of your predictions of the lion population after 1963.
2. Draw a graph of your prediction of the lion population from 1980-2012.
3. Draw a predicted carrying capacity on this second graph.
Populations that exhibit a logistic growth model fluctuate around their carrying capacity point. 1) the population increases in size. 2) the population fluctuates around 100 individuals. 3) K = 100 individuals.
What is the logistic growth model?In the logistic growth model, population growth depends on density. Natality and mortality depend on the population size, meaning there is no independence between population growth and population density.
When a population grows in a limited space, density rises gradually and, eventually, affects the multiplication rate.
The population per capita growth rate decreases as population size increases.
The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
K is a constant that equals the population size at the equilibrium point, in which the natality and the mortality rate get equal.
Assuming that the population size is N, when
N<K, the population can still grow. N approximates to K, the population's growth speed decreases. N=K the population reaches equilibrium, N>K, the population must decrease in size because there are not enough resources to maintain that size.
The sigmoid curve represents the logistic growth model.
The carrying capacity might be affected by different factors, known as limiting factors, which might be a result of the population density (for example, competition) or might be density-independent.
Dense-independent factors might be human impact or natural disasters (fires, volcanic eruption, flooding).
According to the information provided in the exposed example,
→ Before 1962 approximately 75 and 100 lions were living in Ngorongoro Crater, Tanzania.
→ In 1962, unusually heavy rains occurred, causing the massive build-up of blood-sucking flies in the crater.
→ These flies attacked several lions, and many individuals got infected and sick, ending in death.
→ Lions population sharply decreased between 1962 and 1963 to only 12 individuals.
According to this research,
between 1950 and 1962 the lions' populations fluctuated between approximately 68 and 92 individuals. between 1962 and 1963 the lions' population size decreased from 70 individuals to 12.In this example, we can see how the occurrence of dense-independent factors such as heavy rains during the dry season caused the emergence of blood-sucking flies, which negatively interacted with lions and decreased their carrying capacity point.
1. Draw a graph of your predictions of the lion population after 1963.
To answer this question, we will assume that after this unusual event, the fly population returned to normal levels, and the surviving lions got to reproduce again.
We will also assume that, after these heavy rains, the crater was full of available resources.
Under these assumptions, we expect the lions' population to grow until reaching a new carrying capacity. The reproductive rate is expected to be higher than the mortality rate.
Since there are more available resources, we expect this new carrying capacity to be higher than during the period 1950-1962.
You will find this graph in the attached files. Remember this is only an estimation of what might occur, so the red line does not represent real data, just a prediction of population growth until reaching a new K point.
2. Draw a graph of your prediction of the lion population from 1980-2012.
Assuming this lions' population is not affected by any other anusual event, we will predict that from 1980 to 2012 this group fluctuated around 100 individuals.
You will find the graph in the attached files. Remember the red line is a prediction, it does not represent real data.
3. Draw a predicted carrying capacity on this second graph.
We expect the new carrying capacity to be arround 100 individuals, so this is the new K. It is represented with a thinner red horizontal line.
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Filtration of blood in the kidney nephron begins in the: a. Bowman's capsule b. Proximal convoluted tubule c. Distal convoluted tubule d. Loop of Henle
a. Filtration of blood in the kidney nephron begins in the Bowman's capsule.
The function of Bowman's Capsule:The glomerulus is protected by a two-walled pouch called Bowman's capsule. Bowman's space is the term for the area between the capsule's walls. The glomerular capsule, the Malpighian capsule, and the renal corpuscular capsule are additional names for Bowman's capsule.
Bowman's capsule surrounds the glomerular capillary loops and participates in the filtration of blood from the glomerular capillaries. Additionally serving a structural purpose, Bowman's capsule generates a urinary passageway that allows filtrate to enter the nephron and go to the proximal convoluted tubule.
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The orange-breasted sunbird (Anthobaphes violacea) lives only in the fynbos region in the Western Cape of South Africa. This is an example of a(n):
This is an example of an endemic species.
What are endemic species?Endemic species are plants and animals that exist only in one geographic region.Species can be endemic to large or small areas of the earthEndemic area can be an island, state, nation, country or other well defined zone.Species are not endemic if they are also found elsewhere.Learn more about endemic species here:
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What does probability in selection mean to you? How does the knowledge gained from Punnett squares differ from the types of probability in this activity? Your work should be 250–500 words in length.
The probability is fundamental for calculating the selection coefficient, which can be estimated by a Punnett square.
What is the Punnett square?The Punnett square is a diagram employed in genetics to estimate the genotypes and phenotypes derived from a particular genetic cross.
This diagram (Punnett square) can be used to determine the selection coefficient for different genes and thus estimate the time required (n generations) for selective breeding programs.
Statistics and probabilities play a central role in genetics, especially to estimate additive effects in complex quantitative traits influenced by many genes.
In conclusion, the probability can be estimated by a Punnett square.
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Although most solutes that enter or exit the cell are relatively small (inorganic ions, sugars, or amino acids), occasionally the movement of larger molecules into or out of the cell is required. For example, certain cells secrete proteins, such as pancreatic cells that secrete insulin. Other cells take up food particles or even entire cells, such as lymphocytes in your immune system. Transport of such large materials into and out of the cytosol cannot be accomplished by transport proteins in the plasma membrane. The transport of large molecules is accomplished by bulk transport via exocytosis and endocytosis. Like other forms of active transport, bulk transport requires an input of energy. Before beginning this tutorial, watch the segment of the Membrane Transport animation on exocytosis and endocytosis. Observe the role that vesicles play in transport of materials into and out of the cell. Part A - Exocytosis and endocytosis Sort the phrases into the appropriate bins depending on whether they describe exocytosis, endocytosis, or both.
Your question is incomplete. please read below to find the full content.
a. --> ENDOCYTOSIS
b. -->EXOCYTOSIS
c.--> ENDOCYTOSIS.
d. --> BOTH
e. --> EXOCYTOSIS
f. --> BOTH
g. --> EXOCYTOSIS
To answer the question, first, we need to know the meaning of endocytosis and exocytosis.
Endocytosis and exocytosis process refers to molecules transport mediated by vesicles. It occurs from and into the cell and needs energy to happen because it is active transport.
Cells can export many substances in vesicles or vacuoles that originate in specific organelles like, for instance, the Golgi complex. Organelles form new vesicles or vacuoles with substances destined for exportation and send them forward to the membrane. When they get there, they fuse to the cell membrane, releasing all their content to the extracellular space. When fussing, the vesicle membrane increases the size of the cellular membrane. This process is exocytosis, and its direction is always from the inside of the cell to the outside.
But there is also another vesicle-mediated transport that occurs from the exterior to the cell interior, the endocytosis process. It happens when the cell imports material from the extracellular space through the invagination of the membrane, producing a new vesicle that surrounds the incoming material. The invagination ends in strangulation of the membrane, releasing the new vesicle in the cytoplasm. This process decreases the size of the cellular membrane because it uses part of it to engulf the material.
Now that we know these concepts, we can sort the phrases into the appropriate bins.
a. decreases the surface area of the plasma membrane. ENDOCYTOSIS, because the new vesicles are formed using the cell membrane.
b. requires fusion of vesicles with the plasma membrane. EXOCYTOSIS, because the vesicle needs to fuse to the cell membrane to release the carrying material.
c. forms vesicles from inward folding of the plasma membrane. ENDOCYTOSIS. Refers to the invagination process of the cell membrane. It only occurs during endocytosis
d. transported substances never physically cross the plasma membrane. BOTH. Substances are too big or too many to be physically transported through the cell membrane
e. increases the surface area of the plasma membrane. EXOCYTOSIS. Occurs when the vesicle fuses the cell membrane to release the content to the exterior.
f. requires cellular energy. BOTH of them, because they are active transport.
g. secretes large molecules out of the cell. EXOCYTOSIS. The direction is from the interior of the cell to the exterior. These are exportation molecules.
Although most solutes that enter or exit the cell are relatively small (inorganic ions, sugars, or amino acids), occasionally the movement of larger molecules into or out of the cell is required. For example, certain cells secrete proteins, such as pancreatic cells that secrete insulin. Other cells take up food particles or even entire cells, such as lymphocytes in your immune system. Transport of such large materials into and out of the cytosol cannot be accomplished by transporting proteins in the plasma membrane. The transport of large molecules is accomplished by bulk transport via exocytosis and endocytosis. Like other forms of active transport, bulk transport requires an input of energy. Before beginning this tutorial, watch the segment of the Membrane Transport animation on exocytosis and endocytosis. Observe the role that vesicles play in the transport of materials into and out of the cell.
Part A
Sort the phrases into the appropriate bins depending on whether they describe exocytosis, endocytosis, or both.
a. decreases the surface area of the plasma membrane
b. requires fusion of vesicles with the plasma membrane
c. forms vesicles from inward folding of the plasma membrane
d. transported substances never physically cross the plasma membrane
e. increases the surface area of the plasma membrane
f. requires cellular energy
g. secretes large molecules out of the cell
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Should you see signs of microbial growth in a sterile medium if you allow it to incubate for several days
No, even after several days of incubation, you shouldn't detect any symptoms of microbial growth in a sterile medium.
What is the microbial growth in the sterile medium?The deliberate introduction of germs into a sterile growing medium is known as immunization. When there are no living creatures present, a substance is sterile; undesirable bacteria are said to be contaminated. The use of aseptic procedures helps keep growing media from being contaminated. Reduce the amount of time that cultures and growth media are exposed to the outside world. Clean the work area both before and after each use. Avoid breathing or touching the stock cultures or sterile culture media. Before used, loops, needles, pipes, and other items should be sanitized. The tube caps should be held in your hand while inoculating and not placed on the table while using tubes.
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This chart shows characteristics of three different types of waves.
A 3-column table with 1 row titled Three Different Types of Waves. The first column labeled Wave X has entry visible light. The second column labeled Wave Y has entry X-ray. The third column labeled Wave Z has entries ocean wave.
Which statement is best supported by the information in the chart?
Wave X and Wave Y are mechanical waves, and Wave Z is an electromagnetic wave.
Wave X and Wave Y are electromagnetic waves, and Wave Z is a mechanical wave.
Wave X and Wave Z are electromagnetic waves, and Wave Y is a mechanical wave.
Wave X and Wave Z are mechanical waves, and Wave Y is an electromagnetic wave.