the substances that bind to repressors to prevent them from binding to their operators
What does a repressor look like?
The homocysteine repressor MetJ is an illustration of a repressor protein. MetJ utilizes the ribbon-helix-helix (RHH) motif to bind with DNA bases. MetJ is a homodimer made of two monomers, each of which contributes an alpha helix and a beta ribbon.
What triggers the repressor to work?
An amino acid binds with the met repressor and activates it when it is present. The repressor's presence on the DNA strand prevents RNA production. The repressor separates from the operator when the amino acid is absent, and RNA production continues
To know more about repressor visit:
https://brainly.com/question/1621943
#SPJ4
At the beginning of this century, there was a general announcement regarding the sequencing of the human genome and the genomes of many other multicellular eukaryotes. Many people were surprised that the number of protein-coding sequences was much smaller than they had expected. Which of the following types of DNA make up the rest of the human genome? A. DNA that is translated directly without being transcribed B. non-protein-coding DNA that is transcribed into several kinds of small RNAs with biological function C. non-protein-coding DNA that serves as binding sites for reverse transcriptase D. DNA that consists of histone coding sequences
Non-protein-coding DNA that is transcribed into several kinds of small RNAs with biological function is the correct answer.
Numerous protein-coding and non-protein coding sequences can be found in the human genome. The sequences that can be translated into protein sequences are known as protein-coding sequences.
Although it was anticipated that these coding sequences would be larger when the genome was sequenced, the sequences turned out to be smaller. This demonstrates that non-coding sequences make up the majority of the genome.
These non-coding sequences are significant because, while they cannot be translated into proteins, they can be translated into a variety of RNA molecules, including regulatory RNA, ribosomal RNA, and others, through transcription.
To know more about proteins check the below link:
https://brainly.com/question/7286805
#SPJ4
the antenna complex minnesota system transfer is excited electron to the primary electron acceptor generate nadph
The excited electron is transported to NADP+ at the end about a chain of electrons after leaving the initial electron acceptor, creating NADPH.
What does Minnesota excel at?The name of the state, which has the most lakes of any state in the union, is "The Land of 10,000 Lakes." Minnesota is renowned for its outdoor pursuits, such as hiking, backpacking, fishing, and winter sports, as well as for being the location of Mall of America the largest shopping center in the United States.
Why do tourists come to Minnesota?There is plenty of all-ages entertainment to be obtained thanks to the county's calm natural beauty and its record-breaking number of lakes. Explore quaint tiny villages, visit the woods, and go on the water.
To know more about Minnesota visit:
https://brainly.com/question/22078462
#SPJ4
Complete each statement and then place the sentences in the proper order for the following scenario: Prior to attempting a heavy weightlifting activity, a competitor steps to the bar, squats down toward the bar resting on the floor, and establishes a firm grip.
The complete statements and roper order of the muscle contraction while weightlifting is:
1.Frequency.
2.Isometric.
3.Concentrically.
4.Motor units.
The proper order of the sentences are:
3. No immediate movement of the bar is demonstrated despite the production of muscle force, which demonstrates Concentrically contraction.
1. When ready, he initiates neural recruitment of his ankle, knee, and hip extensors by increasing the frequency of action potentials to the lower-limb extensors.
4. Voluntarily exerting more effort, additional Motor units are recruited, which results in the production of greater forces, prior to joint movement.
2. Progressively increasing force production allows the force to exceed that of the bar's inertia. Extensors of the ankle, knee, and hip begin to contract Isometric.
Muscle contractions are available in two types eccentric and concentric. When a muscle contracts concentrically, it shortens and produces force that is larger than the weight being lifted. This permits you to lift the weight by exerting more force than the weight. You cannot lift the weight if the concentric muscle contraction does not provide adequate force. Your bicep contracts concentrically as you lift and draw a weight toward your shoulder, such as when you perform an arm curl.
To know more about muscle contraction here:
https://brainly.com/question/28446332#
#SPJ4
Complete Question:
Complete each statement and then place the sentences in the proper order for the following scenario: Prior to attempting a heavy weightlifting activity, a competitor steps to the bar, squats down toward the bar resting on the floor, and establishes a firm grip.
1. When ready, he initiates neural recruitment of his ankle, knee, and hip extensors by increasing the ____________ of action potentials to the lower-limb extensors.
2. Progressively increasing force production allows the force to exceed that of the bar's inertia. Extensors of the ankle, knee, and hip begin to contract ____________ .
3. No immediate movement of the bar is demonstrated despite the production of muscle force, which demonstrates ____________ contraction.
4. Voluntarily exerting more effort, additional ____________ are recruited, which results in the production of greater forces, prior to joint movement.
A patient has 47 chromosomes, including three X chromosomes. Which of the following statements describes her expected phenotype?
a. a female with masculine characteristics such as facial hair
b. an apparent male who is sterile
c. a sterile female
d. a healthy female of slightly above-average height
A patient has 47 chromosomes, including three X chromosomes will have the expected phenotype as d. a healthy female of slightly above-average height.
Triple X syndrome is marked by the presence of an extra chromosome in each female cell (47: 2A + XXX). The most common cause of this kind of error is the non-disjunction of sperm or ovum during meiosis. The affected female is often taller than average and has two more bar bodies in each cell.
The most prevalent physical characteristic is being taller than the average person. The majority of girls with triple X syndrome are capable of getting pregnant and have normal sexual development. When compared to their siblings, certain girls and women with triple X syndrome may have slightly lower IQ than those in the normal range. Others could struggle with behavioral issues and intellectual limitations.
To know more about three X chromosomes here:
https://brainly.com/question/3675657#
#SPJ4
Where do you find most of the DNA in the cells most commonly collected by police? (hint-remember what we used in labs)(5 Points)
in the mitochondria of red blood cells
in the nucleus of red blood cells
in the cytoplasm of red blood cells
in the mitochondria of cheek cells
in the nucleus of cheek cells
in the cytoplasm of cheek cells
Answer:
Above
Explanation:
A ruler placed under the low power objective lens (5X) of a compound light microscope measures a diameter of 1.5 mm. What is the diameter of the field of view for this microscope if the high power objective lens (50X) is used?
Answer:
The diameter of the field of view for the high power objective lens (50X) can be calculated using the following formula:
Field of view (mm) = Ruler size (mm) / Magnification
Plugging in the values given in the question, we get:
Field of view (mm) = 1.5 mm / 50X
This simplifies to:
Field of view (mm) = 0.03 mm
So the diameter of the field of view for the high power objective lens (50X) is 0.03 mm.
Explanation:
Which of the following predicts what would happen if glucose moved by facilitated diffusion instead?
Facilitated diffusion is a type of passive transport, which means that it does not require the expenditure of energy in order to move molecules across a membrane. Although it is a slower process, it still allows molecules such as glucose to move from areas of high concentration to areas of low concentration.
If glucose moved by facilitated diffusion instead of its normal active transport, it would still move from areas of high concentration to areas of low concentration, but the rate of this process would be much slower. This would mean that the cells of the body would not be able to obtain glucose as quickly as they normally do, leading to a decrease in the amount of energy available for their metabolic processes. This, in turn, could affect the rate of cell growth, as well as the rate of cell division.
In addition, the slower rate of glucose diffusion could cause a decrease in the amount of glucose available to the body’s organs and tissues, leading to a decrease in their overall functioning. This could have a wide range of implications, from impairing the immune system to causing fatigue and lethargy.
Learn more about Facilitated diffusion at :https://brainly.com/question/14852229
#SPJ4
the second phase of our metabolism is called the krebs cycle. the end product primarily is which is the source of energy that is in our food.
The body uses glucose as its main energy source. Starches and sugars are two main dietary sources of glucose.
Transforming food into energy is metabolism. The process through which the body converts food and liquids into energy is called metabolism. To create the energy the body requires, calories from food and beverages combine with oxygen throughout this process. A body needs energy for all its functions, even when at rest.
Ectomorph, mesomorph, and endomorph are the three basic forms of metabolism; these are words you generally wouldn't use in a typical conversation. But understanding the body types you were born with will ultimately benefit your workout program.
To learn more about metabolism. Please visit the below link.
https://brainly.com/question/15413788
#SPJ4
blood cells could be modified to better carry oxygen, which would help the athlete's muscles to not get sore as fast. lactic acid wouldn't build up as fast either, causing less muscle soreness. this would affect muscular system and respiratory system. another modification would be the skeletal structure. you can change the bones of the athlete to make them better suited for their sport. you could strengthen, lighten, or elongate bones. for example, if the athlete is basketball player, they could use gene doping to become taller.
It is true to say that blood cells could be modified to better carry oxygen, which would help the athlete's muscles to not get sore as fast.
During exercise the cardiovascular framework needs to warrant substrate supply to working muscle. The fundamental capability of red platelets in practice is the vehicle of O₂ from the lungs to the tissues and the conveyance of metabolically created CO₂ to the lungs for lapse. Blood cells additionally adds to the blood's buffering limit, and ATP and NO delivery from red platelets adds to vasodilation and further developed blood stream to working muscle. These capabilities require sufficient measures of red platelets available for use
The review shows that when the component that lets nitric oxide out of the amino corrosive restricting site in the blood cells is working, the veins enlarge and permit oxygen-rich red platelets to stream into the tissue of athlete's body.
Hence, given statement is correct.
To know more about blood cells, visit here:
https://brainly.com/question/17890844
#SPJ4
(Complete question) is:
blood cells could be modified to better carry oxygen, which would help the athlete's muscles to not get sore as fast.Select true or false.
Which of the following is not a function of a cytoskeleton in a cell?
A. Intracellular transport
B. Maintenance of cell shape and structure
C. Support of the organelles
D. Cell motility
E. None of these
Cytoskeleton is not associated with the intracellular transport. The microtubules and microfilaments, are the components of cytoskeleton and are responsible for cellular and intercellular movements Rest of the options are functions of cytoskeleton is a cell.
The cytoskeleton is an intricate, dynamic network of linking protein filaments that is present in all cells, including those of bacteria and archaea. In eukaryotes, it extends from the cell nucleus to the cell membrane and is composed of the same proteins in all species. Its three main constituents are microfilaments, intermediate filaments, and microtubules. Each of these has the ability to quickly expand or disassemble, depending on the demands of the cell.
To learn more about Cytoskeleton Click on the given link to learn more: https://brainly.com/question/15200286
#SPJ4
Coenzyme A, NAD+, and FAD are coenzymes that are necessary for energy production. Determine whether the following phrases describe coenzyme A, NAD+, or FAD.coenzyme A: NAD+FAD.
whether the following phrases describe coenzyme A, NAD+, or FAD. coenzyme A: NAD+FAD. contributes to the citric acid cycle's component acetyl-SCoA is a product of the nutrient pantothenic acid (B5)
Many enzymes need coenzymes, which are organic substances, for catalytic activity. They frequently contain vitamins or vitamin compounds. They can occasionally serve as catalysts in the absence of enzymes, but not as efficiently as when an enzyme is present.
Coenzymes include flavin adenine dinucleotide (FAD), nicotinamide adenine dinucleotide (NAD), and nicotinamide adenine dinucleotide phosphate (NADP) (FAD). These three coenzymes participate in hydrogen transport or oxidation. Coenzyme A (CoA), which is also involved in the transfer of acyl groups, is another.
To learn more about coenzymes. Please visit the below link.
https://brainly.com/question/29386956
#SPJ4
True or False, Control is an intermittent activity that requires periodic attention from managers once or twice a month.?
It is true that control is an intermittent activity that requires periodic attention from managers once or twice a month.
Control to exercise restraining or directive influence over. Control is an intermittent activity that needs periodic attention from managers once or double a month. as a result of it makes an attempt to eliminate or shorten the delay between performance and feedback regarding the performance.
In the context of management theory, intermittent management provides a spectrum of potentialities between the 2 extremes of continuous-time and discrete-time management: the control signal consists of a sequence of (continuous-time) parameterised trajectories whose parameters are adjusted intermittently.
To learn more about control here
brainly.com/question/28346198
#SPJ4
you make dilute 1 nm solutions each of glycogen, amylose and amylopectin in water, fully solubilizing the polysaccharide molecules in a test tube. you then add a reagent to each tube that is nonfluorescent when free in solution, but reacts irreversibly with polysaccharide non-reducing ends to introduce a covalently-bound fluorescent tag. after the reagent is allowed to react completely with the polysaccharide in each tube, rank the resulting polysaccharide solutions based on fluorescence:
Dilution is the process of lowering a solute's concentration in a solution. It usually just involves mixing the solution with more solvent, such more water.
A solution is diluted when more solvent is added without increasing solute. The final mixture is thoroughly mixed to make sure that every component is the same.Gases and vapors diluted in air, for instance, are directly related in the same way. However, it could be more difficult to achieve thorough mixing of gases and vapors.For instance, a solution has a given salt concentration if 10 grammes of salt (the solute) are dissolved in 1 litre of water (the solvent) (molarity). This solution's salt concentration decreases when 1 liter of water is added. 10 grammes of salt are still present in the diluted solution (0.171 moles of NaCl).
To know more about Dilution
https://brainly.com/question/15174310
#SPJ4
According to the World Resource Institute, biodiversity is the variety of the world's organisms, including their genetic diversity. In a world of genetically modified (GM) crops, agriculture is greatly reducing the genetic diversity of the plants on Earth. By ignoring genetic diversity, while we develop GM products, we run several risks that include ALL BUT ONE listed here.
A. a disease or pest emerging that will wipe out the GMOs.
B. the extinction of many native or indigenous crops.
C. increase production while reducing environmental impacts.
D. reduced biodiversity of important food crops.
Answer:
C
Explanation:
The correct answer is: increase production while reducing environmental impacts. This is because genetically modified (GM) crops are often designed to increase production and reduce environmental impacts, such as the use of pesticides and herbicides. However, the development and widespread use of GM crops can also reduce the genetic diversity of plants on Earth, which can have negative effects on biodiversity and lead to other risks such as the emergence of diseases or pests that can wipe out the GMOs, and the extinction of native or indigenous crops. Therefore, ignoring genetic diversity while developing GM products can lead to negative consequences for agriculture and the environment.
select the true statements about the citric acid cycle. two molecules of coenzyme a are produced per turn of the citric acid cycle. the citric acid cycle is an aerobic process. the citric acid cycle occurs in the cytoplasm of the cell. the major reactants in the citric acid cycle are acetyl coa, nad nad , gdpgdp , and fadfad . in the citric acid cycle, acetyl-coa is degraded to produce nadhnadh and fadh2fadh2 .
The true statements about the citric acid cycle is two molecules of coenzyme a are produced per turn of the citric acid cycle.
The Krebs cycle, also known as the TCA cycle or the citric acid cycle, is a series of enzyme-catalyzed reactions that take place in the mitochondrial matrix and involve the oxidation of acetyl-CoA to produce carbon dioxide and the reduction of coenzymes to produce ATP for the electron transport chain.
Hans Krebs proposed the intricate cycle, which earned it the name Krebs cycle. In 1953, he received the Nobel prize for his contribution. The acetyl group of acetyl-CoA is oxidized to make two molecules of CO2 in a succession of eight steps, while also producing one ATP. Additionally, reduced high-energy molecules like NADH and FADH2 are created. Catabolic reactions occur within cells during cellular respiration. It is a biochemical process by which waste materials are removed and nutrients are broken down to generate energy, which is then stored in the form of ATP. The process of aerobic respiration needs oxygen.
To know ore about Citric acid cycle visit:
https://brainly.com/question/11459709
#SPJ4
differential surface interactions and surface templating of nucleotides (dgmp, dcmp, damp and dtmp) on oxide particle surfaces
The DUMP molecule acts as a direct precursor for the production of dttp.
Deoxyuridine monophosphate (dUMP), a type of uridine monophosphate (UMP) that has undergone oxygenation, is a precursor to deoxythymidine monophosphate (dTMP), a substance needed for the production of DNA nucleotides. By substituting a hydrogen atom for the hydroxyl group at the 2' carbon of ribose, UMP is deoxygenated to form dUMP.
In its conjugate acid and conjugate base forms, deoxyuridine monophosphate (dUMP), a deoxynucleotide, is also known as deoxyuridylic acid or deoxyuridylate. It belongs to the group of chemical substances known as pyrimidine 2'-deoxyribonucleoside monophosphates.
In the multienzyme complex responsible for deoxynucleotide production, thymidylate synthase interacts with dCMP deaminase to convert dUMP to dTMP. Hexameric human dCMP deaminase has 178 amino acids, a zinc-binding domain, and.
To learn more about Deoxyuridine monophosphate please click on below link
https://brainly.com/question/28257782
#SPJ4
Tolman believed that rats form cognitive maps, internal representations of the layout of the world. (A) In one experiment, rats placed at the start of a maze learned to run directly to a goal box where food was provided; the purple line shows the rats' route. (B) If the preferred route was blocked, rats could easily find an effective alternative route (orange line); this indicates that they had information about the spatial layout of the maze.
(A) In one experiment, rats placed at the start of a maze learned to run directly to a goal box where food was provided; the purple line shows the rats' route. (B) If the preferred route was blocked, rats could easily find an effective alternative route (orange line), Tolman believed that rats form cognitive maps, internal representations of the layout of the world.
Any visual depiction of an individual's (or a group's) mental model for a particular procedure or idea is called a cognitive maps. The way that concepts and their connections are graphically depicted in cognitive maps is not constrained by any visual conventions that they must abide by. A cognitive map is a mental representation of the actual environment's arrangement. Driving home from work on a familiar route without a GPS is an example of employing a cognitive map.
Learn more about cognitive maps here:
https://brainly.com/question/14327699
#SPJ4
True or False, scientists gradually build an increasingly accurate and detailed understanding of the natural world.
True. Scientific research is a process of slowly piecing together a greater understanding of the natural world.
Exploring the Natural World Through Scientific ResearchScientific research is an ongoing and iterative process of gradually increasing our understanding of the natural world. Through experiments, observations, and data collection, scientists have been able to build a greater and more detailed idea of the physical and biological processes that govern our environment.
By exploring the unknown, conducting experiments to test hypotheses, and analyzing the data generated from these experiences, scientists can piece together an ever-increasing and accurate picture of the natural world. This process of discovery leads to further questions and research, and helps to explain the complexities of the surrounding universe.
Learn more about Scientific Research: https://brainly.com/question/25257437
#SPJ4
HURRY PLEASE I HAVE BARELY ANYTIME LEFT
What is the point of meiosis?
A. Cause mutations in which the DNA content of the gene is altered
B. Creation of somatic cells for growth and repair
C. Segregation of sister chromatids
D. Increased genetic variation by crossing over and fertilization
Answer:
D. increased genetic variation by crossing over and fertilization
You have three islands that are an equal distance from source populations for immigrants. You would expect S value (number of species at equilibrium) on each island to be _____, extinction rates to be _____, and the rates of extinction to be _____.the same; the same; the same
You would expect the S value (number of species at equilibrium) on each island to be the same extinction rates to be the same and the rates of extinction to be the same.
Extinction happens when species are faded because of environmental forces consisting of habitat fragmentation, weather trade, natural disaster, over-exploitation by using people, and pollution, or because of evolutionary modifications in their members (genetic inbreeding, poor reproduction, decline in population numbers).
An extinction occasion is a giant and fast decrease in the biodiversity in the world. Such an occasion is recognized via a pointy change inside the diversity and abundance of multicellular organisms.
The main cutting-edge causes of extinction are the loss and degradation of habitat (Deforestation), over-exploitation, invasive species, climate exchange, and nitrogen pollutants.
Learn more about Extinction here:-https://brainly.com/question/1048615
#SPJ4
Most people have observed it "rain" in the produce department of grocery stores, where water spra
green leafy vegetables from a misting system. How does this practice help to keep vegetables fresh
crisp?
A:Extra water creates a hypertonic solution around plant cells, which causes water to diffuse
the cell plasmolysing the cells.
B:Extra water creates a hypotonic solution around plant cells, which causes water to diffuse
the cell creating turgor pressure.
C: Extra water makes plants shiny, increasing the likelihood that consumers will purchase the
plants.
D:Extra water creates an isotonic solution around plant cells, which causes water to diffuse i
and out of the plant cells making them flaccid.
AAnswer: B:Extra water creates a hypotonic solution around plant cells, which causes water to diffuse the cell creating turgor pressure.
Which statement accurately reflects the order of relationship between humans and the other apes, going from most closely related to most distantly related? group of answer choices sister taxa with chimpanzees and bonobos, then gibbons, gorillas, and orangutans sister taxa with chimpanzees and gorillas, then bonobos, orangutans, and gibbons sister taxa with chimpanzees, then bonobos, gorillas, orangutans, and gibbons sister taxa with chimpanzees and bonobos, then gorillas, orangutans, and gibbons
Option A. Sister taxa with chimpanzees and bonobos, then gorillas, orangutans, and gibbon. Statement accurately reflects the order of relationship between humans and the other apes, going from most closely related to most distantly related.
Within the early segment of brain development, human brain cells spend greater time within the metaphase of mobile division, probably contributing to the differences in primate evolution. Chimps have an extra chromosome. whilst human genomic make-up only consists of 23 pairs of chromosomes, other extraordinary apes have 24.
A number of research across the a long time have cautioned that pound-for-pound, chimpanzees might be as an awful lot as three to nearly 5 times more potent than a strapping human, or as low as 2.5 times. New examine suggests human brains are strongly formed by external affects. compared with most different animals, chimpanzees are pretty sensible: They paintings with equipment, speak with complex vocalizations, and are desirable problem-solvers.
Learn more about chimpanzees here:-https://brainly.com/question/13155646
#SPJ4
How does capillarity help sustain life?
a.Plants use capillarity to move water from their roots to their leaves.
b.Capillarity allows water to form droplets.
c.Animals rely on capillarity to maintain their body temperatures.
d.Water’s capillarity allows many different substances to dissolve in water.
Both mammals and reptiles share one aspect of their reproductive cycle ______ fertilization
Mammals and reptiles have a similar reproductive cycle in one respect. Internal fertilization.
What is the reproductive cycle?Menstrual, regenerative, proliferative, and secretory phases are its four stages. The period between the first day of one menstruation and the first day of the subsequent menstruation is known as a cycle, and it typically lasts between 21 and 40 days. A cycle typically lasts 28 days.
What are the two reproductive cycles and how many types of reproductive cycle are there?A fertile female has two regular cycles: the ovarian cycle, which takes place in the ovary's cortex, and the menstrual cycle, which takes place in the uterus' endometrium. The hormones secreted during the various periods of the ovarian cycle regulate the phases of the menstrual cycle.
Estrual and menstrual cycles are the two different types of reproductive cycles. Estrual and menstrual cycles are the two recognised forms of reproductive cycles, and an ovarian cycle is the time period between two subsequent ovulations.
To know more about Reproductive Cycle visit:
https://brainly.com/question/29156518
#SPJ4
You believe that you have isolated a new strain of positive-sense, single-stranded RNA virus and set about studying it in your laboratory. Which of the following lines of evidence would most strongly support your hypothesis that the virus is a [+]ssRNA?
A) The virions are diploid.
B) You sequence the bases in the viral RNA and the mRNA and find them to be antiparallel.
C) Introducing a protease inhibitor causes the virus to stop producing proteins and reproducing.
D) Introducing a reverse transcriptase inhibitor slows down the growth of the virus.C) Introducing a protease inhibitor causes the virus to stop producing proteins and reproducing.
OPTION C Introducing a protease inhibitor causes the virus to stop producing proteins and reproducing would most strongly support your hypothesis that the virus is a [+]ssRNA
Positive-strand or single strand RNA viruses (+ssRNA viruses) are a class of viruses with ribonucleic acid genomes that are positive-sense. The positive-sense genome can function as messenger RNA (mRNA) and be directly translated into viral proteins by the ribosomes of the host cell. Positive-strand RNA viruses encode an RNA-dependent RNA polymerase (RdRp), which is used during genome replication to generate a negative-sense antigenome, which is then used as a template to generate a new positive-sense viral genome. One type of antiretroviral drug used to treat HIV is protease inhibitors. The goal of these drugs is to reduce the amount of HIV virus in the body (known as the viral load) to undetectable levels. This slows the progression of HIV and aids in the treatment of symptoms.
Learn more about single strand RNA here:
https://brainly.com/question/2272779
#SPJ4
currently, two extant elephant species (x and y) are placed in the genus loxodonta and a third species (z) is placed in the genus elephas. assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?
A. Species X and Y have more homologies with each other than they do with species Z.
define species ?
A species is the basic unit of categorization and taxonomic rank of an organism, as well as a unit of biodiversity, in biology. A species is frequently described as the biggest group of creatures in which any two individuals of the right sexes or mating types may create viable offspring, most commonly by sexual reproduction. Species can also be defined by their karyotype, DNA sequence, appearance, behaviour, or ecological niche. Furthermore, because fossil reproduction cannot be studied, palaeontologists employ the idea of chronospecies.
The most recent rigorous estimate of the total number of eukaryotic species is between 8 and 8.7 million. However, by 2011, only around 14% of these have been characterised.
In taxonomy, living organisms are placed into groups according to their similarities.
A genus is a categorization level above species. It is made up of closely related species.
To be included in the same genus, species X and Y must share a larger number of similarities or homologies than species Z.
Species Z has no more in common with either Species X or Species Y.
A. Species X and Y have more homologies with each other than they do with species Z.
To learn more about Species follow the given link:https://brainly.com/question/14188968
#SPJ1
The presence of calcium in the sarcoplasm is directly responsible for ____________________.
energizing the myosin heads
exposing the binding sites on actin
the movement of actin towards the M line
decreasing the length of the myosin myofilamentexposing the binding sites on actin
The presence of calcium in the sarcoplasm is immediately liable for exposing the binding websites on actin.
The calcium that enters the heart mobile thru the calcium ion channel activates the ryanodine receptor to release sufficient calcium from the sarcoplasmic reticulum to initiate heart muscle contraction. this is completed by using binding to some other shape, named troponin, in the coronary heart muscle cells.
Calcium is needed by proteins, troponin, and tropomyosin, that regulate muscle contraction by blockading the binding of myosin to filamentous actin. In a resting sarcomere, tropomyosin blocks the binding of myosin to actin.
Learn more about sarcoplasm here
https://brainly.com/question/10596906
#SPJ4
TRUE/FALSE. Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals
programme, additional pesticides may also be used. 9) The correct response is (c). Instead than just treating existing insect issues, an IPM programme aims to
One explanation why some pesticides can lose their effectiveness if used repeatedly in the same area is suggested by the discovery that populations of pesticide-degrading microorganisms are substantially higher in soils with a relatively lengthy history of pesticide use than in soils that are free of such chemicals. There are many ways to define a weed. Typical classifications include: an unattractive plant The discovery that there are many suggests one reason why certain pesticides can lose their effectiveness if administered repeatedly in the same location
To learn more about pesticides please click on below link
https://brainly.com/question/24316938
#SPJ4
Connective tissues are made of different combinations of ground substance and fibers. As you compare slides of connective tissues, which would most likely be the strongest type of connective tissue based on the composition of ground substance and fibers?Collagen is the toughest of the fibers. If you saw collagen in high amounts, that would indicate strength in the connective tissue.
B. Connective tissues high in collagen fibers is the strongest type of connective tissue based on the composition of ground substance and fibers.
The name "connective tissue" refers to the mesodermal tissue that acts as a matrix beneath the epithelium layer and as a linking or supporting framework for the majority of the body's organs.
The correct response is collagen-rich connective tissues. The strongest of all the fibers is known to be collagen. Collagen is a sign of a strong connective tissue when it is present in large numbers.
The strongest of the fibers is collagen. Collagen in large concentrations would be a sign of the connective tissue's strength.
To know more about connective tissue here:
https://brainly.com/question/10423687#
#SPJ4
Corrected Question:
Connective tissues are made of different combinations of ground substance and fibers. As you compare slides of connective tissues, which would most likely be the strongest type of connective tissue based on the composition of ground substance and fibers
A. connective tissue high in ground substance
B. connective tissues high in collagen fibers
C. connective tissue high in elastic fibers
D. connective tissue high in reticular fibers
the purpose of this test is to evaluate how the organs of static equilibrium in the vestibule enable one to maintain balance.
Romberg test, By removing the visual and vestibular components that are involved in maintaining balance, it establishes whether your balance disorders are due to how your dorsal column functions.
The significance of a positive Romberg test?If the Romberg test is positive, sensory ataxia is the likely culprit behind the postural imbalance. The sensory and motor pathways of the brainstem are necessary for maintaining balance while standing up straight. Proprioception, or the body's awareness of its own position and motion in space, is a component of the sensory pathway.
What contributes to balance and gait issues?Orthostatic hypotension and arthritis are frequent causes, although most gait and balance abnormalities have a variety of underlying reasons as well. The majority of gait changes are caused by underlying medical issues rather than being an unavoidable result of aging.
Learn more about equilibrium here:
https://brainly.com/question/9813711
#SPJ4