Option A is Correct. Do these molecules require the same receptors in each bacteria species to generate a response. The grass needs energy input from sunshine in order to develop and keep its organized structure.
The following research questions would be the most useful for directing an inquiry into the relationship between the structure of the signaling molecules and the evolution of quorum sensing.
Because there is less genetic diversity in the smaller population than there is in the larger population, the smaller population will be more influenced than the bigger group. Adenosine triphosphate (ADP) and inorganic phosphate (Pi) are converted into ATP during chemiosmosis by the proton motive force, which is the passage of ions across the membrane (adenosine triphosphate).
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The diagram illustrates the evolution of tetrapods. A tetrapod is a four footed animal. The changes observed over time occurred as the organisms
Does the cell shown have a cell wall, a cell membrane, or both? Explain your reasoning.
Answer:Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape.
Explanation:
Which of the following are potential hazards which you might encounter in the laboratory? (Select all that apply)answer choice:- infectious microorganisms- open flames - hot surfaces - corrosive chemicals- sharp tools or broken glass- gamma radiation - magnetic fields
The potential hazards which we might encounter in the laboratory are
Infectious microorganismsopen flameshot surfacescorrosive chemicalssharp tools or broken glassThus, the correct options are A, B, C, D, and E.
Hаzаrds in the lаborаtory аre those risks presented by the dаngerous properties of hаzаrdous chemicаls. There аre 5 chemicаl аnd physicаl hаzаrds in the lаborаtory.
1. Chemicаl Burns: Mаny lаborаtory chemicаls аre clаssed аs corrosive substаnces, which hаve the potentiаl to breаk down or degrаde common objects such аs equipment, instruments аnd contаiners.
2. Heаt Burns: Bunsen burners аnd other heаting devices аre commonly used in the lаb to speed up chemicаl processes аnd reаctions.
3. Eye Injuries: Chemicаl exposure cаn occur if liquids or gаses аre аccidentаlly releаsed, dаmаging the eyes of workers.
4. Cuts From Glаsswаre: Broken glаss exposes shаrp edges, especiаlly when the glаss is very thin.
5. Inhаling Dаngerous Gаses: The heаlth effects from exposure to hаzаrdous vаpours cаn be either аcute or chronic.
Your options aren't well arranged, but most probably your options were
A. infectious microorganisms
B. open flames
C. hot surfaces
D. corrosive chemicals
E. sharp tools or broken glass
F. gamma radiation
G. magnetic fields
Thus, the correct options are A, B, C, D, and E.
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A number of conditions are required for a population to be in Hardy-Weinberg equilibrium. Which of the following are correct descriptions of the conditions that must be met? Check all that apply.
A. no mutations
B. random mating
C. small population
D. migration or gene flow
E. occurrence of mutations
A number of conditions are required for a population to be in Hardy-Weinberg equilibrium are: no mutations, random mating and occurrence of mutations. Option A, B and C is correct.
The Hardy-Weinberg equilibrium is a theoretical model that describes the genetic structure of a population in which certain conditions are met. In order for a population to be in Hardy-Weinberg equilibrium, the following conditions will be met:
No mutations: This refers to a complete absence of any genetic changes or mutations.
Random mating: This refers to the idea that individuals in a population mate randomly and with equal probability, regardless of their genotype.
Occurrence of mutations: Mutations do occur, but they occur at low frequency and do not have a significant impact on the overall genetic makeup of the population.
The conditions listed below are not requirements for a population to be in Hardy-Weinberg equilibrium:
Small population: The size of the population does not affect the Hardy-Weinberg equilibrium.
Migration or gene flow: The movement of individuals or genes into or out of a population can disrupt the Hardy-Weinberg equilibrium, but it is not a requirement for the equilibrium to be maintained.
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1pt Which statement correctly describes the rock cycle?
OA. Igneous rock can only form by heat and pressure.
OB. Metamorphic rock can only form by crystallization.
O C. Magma can only form by compaction and cementation.
O D. Sedimentary rocks form by deposition, burial, and compaction of weathered particles and dissolved chemicals.
Sedimentary rocks form by deposition, burial, and compaction of weathered particles and dissolved chemicals. Option D
What is the rock cycle?The rock cycle is a continuous process that describes the transformation of rocks from one type to another through geologic processes. The rock cycle is a basic concept in geology that helps to explain how the three major rock types - igneous, sedimentary, and metamorphic - are related and how they change over time.
The rock cycle starts with the formation of igneous rocks from cooled and solidified magma or lava. Through weathering and erosion, these rocks are broken down into sediment, which can then become compacted and cemented to form sedimentary rocks. Under high pressure and temperature, some sedimentary rocks can undergo further changes to become metamorphic rocks. The rock cycle also includes processes such as melting, recrystallization, and uplift, which can take rocks back to their starting point.
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Only a portion of the energy in each trophic level is available to the next level.
Plants are part of the first trophic level. Which statement is true about plants?
OA. Plants have access to the energy in all four trophic levels.
OB. Plants have access to only the energy in the second trophic level.
OC. Plants have access to only the energy they capture from sunlight.
OD. Plants have access to the energy in all trophic levels except the
first one.
Plants are part of the first trophic level.
Plants have access to only the energy they capture from sunlight.
What is a trophic level?
Based on their eating habits, organisms in a chain are divided into various stages. The producers, or green plants, are found on the first and lowest level. The second-level creatures eat the plants or their products. Primary carnivores, or meat eaters, consume herbivores in the third level, while secondary carnivores consume primary carnivores at the fourth level. Since many organisms feed on different trophic levels, these classifications are not strictly enforced. For instance, some omnivores—which are carnivores that also occasionally consume plant material or animal carcasses—are also herbivores.To know more about trophic levels, click the link given below:
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during early embryonic development, which of the following structures supply nutrition to the growing embryo?
Answer:
umbilical cord
Explanation:
Genetic testing is used to determine whether a(n)_____ has a disease causing gene, while genetic screening is used to determine how frequently the gene is found in a(n)______.
Person, population
Genetic testing is a type of medical test that looks at a person’s DNA to identify changes related to specific genetic conditions. This type of testing is used to diagnose a genetic disorder or to determine a person’s chance of developing or passing on a genetic disorder.
Genetic screening is a type of medical test that looks at a population of people to determine how frequently a specific gene occurs. It is used to identify gene variations that may be associated with an increased risk of developing a particular disease or condition.
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Which statements describe the structure of each type of macromolecule? Check all that apply.
The building blocks of carbohydrates are sugars that are made of carbon, hydrogen, and oxygen.
The building blocks of lipids are molecules that contain mostly carbon and hydrogen.
The building blocks of proteins are amino acids made of carbon and nitrogen only.
The building blocks of nucleic acids are nucleotides made of carbon, hydrogen, oxygen, nitrogen, and phosphorous.
All the macromolecule carbohydrates, lipids, and proteins contain carbon, hydrogen, and oxygen, so statement 3 is the exception remaining all are true statements.
What are macromolecules?These include lipids (or fats), proteins, carbohydrates, and nucleic acids. All of the main kinds of macromolecules share the property of being huge polymers constructed from small repeating monomer subunits.
Proteins are made up of amino acids, in the structure of these amino acids includes carbon, oxygen, hydrogen and nitrogen.
Therefore, in the question, all the statements are true except statement 3.
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Answer:
a,b,d
Explanation:
I just did it
se In addition to the p53 gene, another gene on chromosome 17 has been linked to the predisposition to skin cancer. The mutated version of this gene produces the phenotype of increased risk of having skin cancer. The diagrams above track chromosome pair #17 through the process of melosis for a male and a female. These parents are both heterozygous for this gene. Q22: Using the letters A/a, illustrate how these two individuals pass on their allele combinations to their offspring in the Punnett Square at the right. Genotype % in offspring: Phenotype % in offspring: Q23: Circle any offspring in the Punnett Square who are homozygous for this increased skin cancer risk. Q27: Can the mother and father above produce children with no increased risk for this cancer? (Circle one) YES NO Q28: Provide evidence to support your claim here.
Answer:
Unfortunately, I cannot create a Punnett Square without additional information. However, I can explain the concept of a Punnett Square and how it relates to genetic inheritance.
A Punnett Square is a diagram used to predict the expected ratio of offspring genotypes resulting from a genetic cross. In the Punnett Square, each parent's alleles are represented on the top and left side of the square, and the resulting offspring genotypes are listed in the boxes inside the square.
In the given scenario, the parents are both heterozygous for a gene that is linked to skin cancer, meaning they have one normal allele (a) and one mutated allele (A) for this gene. To create a Punnett Square, each parent's alleles are written on the top and left side of the square and then combined to predict the expected offspring genotypes.
In the offspring, there is a 50% chance of inheriting either A or a from each parent. If an offspring inherits A from one parent and a from the other, the offspring would be heterozygous and have an increased risk of skin cancer. If an offspring inherits two a alleles, the offspring would have no increased risk of skin cancer.
Therefore, the answer to Q27 is YES, the mother and father can produce children with no increased risk for this cancer. This is because the offspring can inherit two a alleles, which do not carry the increased risk of skin cancer. This is the evidence to support the claim.
while developing your introduction, you should include a question, a story, or some other creative element because it will help you
Your opening should contain a question, a little narrative, or some other inventive component to help you pique the audience's curiosity.
What four things ought to be covered in the speech's opening?The speech's opening entices the listener to stick around for the remainder of the speech. In order to be effective, an introduction must catch the audience's interest, define the issue, make it relatable, establish credibility, and summarize the main ideas.
What components are crucial when giving your debut speech?Topic selection, speech development, assistance, and organization, practice and delivery, and post-presentation analysis are the four crucial steps in giving your first speech. Everything you say, believe. You share yourself when you spread your message.
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Damage to which of the following lobes of the cerebral cortex would most likely lead to deficits in processing and understanding language?
A. Occipital lobe
B. Frontal lobe
C. Temporal lobe
D. Parietal lobe
Damage to the temporal lobe is most likely to lead to deficits in processing and understanding language. Here option C is the correct answer.
The temporal lobe is located near the temples on each side of the brain and plays a key role in language processing and comprehension. One of the key structures in the temporal lobe that is involved in language processing is Wernicke's area.
This area is responsible for the comprehension of language, and damage to this area can result in a type of language impairment known as Wernicke's aphasia. People with Wernicke's aphasia have difficulty understanding language and may produce speech that is grammatically correct but semantically meaningless.
Another important structure in the temporal lobe involved in language processing is Broca's area. This area is responsible for the production of language, and damage to this area can result in a type of language impairment known as Broca's aphasia.
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One of the primary functions of RNA molecules is to A) transmit genetic information to offspring. B) function in the synthesis of proteins. C) make a copy of itself, thus ensuring genetic continuity. D) act as a pattern or blueprint to form DNA. E) form the genes of higher organisms
One of the primary functions of RNA molecules is to function in the synthesis of proteins.
What is proteins?Proteins are large, complex molecules that are essential for the structure, function, and regulation of the body’s cells, tissues, and organs. They are made up of amino acids, which are the building blocks of proteins. Proteins are found in all living organisms, including animals, plants, and microorganisms, and they play a number of important roles in the body. They act as enzymes, hormones, and antibodies, and they provide structure and support to cells and tissues. They are also important for the transport of molecules within the cell and for the regulation of metabolic processes. Additionally, proteins are necessary for energy production, as well as for the growth and repair of cells and tissues. They also play a role in the development and functioning of the immune system.
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Which is NOT an example of a freshwater biome?
Question 26 options:
small stream
large river
open ocean
deep lake
characteristics that define archaea, however, include the presence of a cell wall, but its structure is not composed of ______ like that of the members of domain ______.
Characteristics that define archaea, however, include the presence of unique membrane lipids, cell wall construction and composition and metabolic pathways.
Long before multicellular life developed on Earth, there existed bacteria and Archaean. They are everywhere around us and engage in a wide range of metabolic processes. Because of this diversity, various species within clades can live on any surface where there is enough moisture.
While bacterial phospholipids are made up of straight fatty acids coupled by ester bonds to the enantiomeric glycerol-3-phosphate backbone, archaeal lipids are made up of highly methylated isoprenoid chains that are ether-linked to a glycerol-1-phosphate backbone.
There are numerous metabolic pathways found in the Archaea that are not the well-known classical pathways. Modified variants of the Embden-Meyerhof and Entner-Doudoroff pathways carry out glycolysis.
The question is incomplete, it should be:
Characteristics that define archaea, however, include the presence of unique membrane ________, _________ construction and composition and _______ pathways.
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5. Write a claim to answer the essential question. Use the search and phylogenetic tree as evidence to
support or refute. Add reasoning statements to each piece of evidence explaining what your evidence shows
in support or refutation of the essential question.
Caffeine evolution is convergent. Three distinct lines of plants have the enzyme to make
caffeine, they are distantly related, but other groups close to them do not make caffeine.
Answer:
Claim: The evolution of caffeine in plants is convergent.
Evidence:
1. Three distinct lines of plants have the enzyme to make caffeine, despite being distantly related. This suggests that the evolution of caffeine in these plants is not due to a common ancestry, but rather convergent evolution.
Reasoning: The presence of caffeine in three separate plant lineages, despite not being closely related, supports the idea that the evolution of caffeine is convergent. This is because convergent evolution occurs when different species independently evolve similar adaptations in response to similar environmental pressures. In this case, the presence of caffeine in three distinct plant lineages suggests that these plants have evolved the ability to produce caffeine as a response to similar environmental pressures, such as herbivory or insect predation.
2. Other groups of plants that are close to the caffeine-producing plants do not make caffeine.
Reasoning: The fact that other closely related plant groups do not produce caffeine supports the idea that the evolution of caffeine in plants is convergent, as it suggests that the ability to produce caffeine is not due to a common ancestry, but rather to convergent evolution. This is because if the evolution of caffeine was due to a common ancestry, then it would be expected that all closely related plant groups would have the ability to produce caffeine.
Explanation:
which of the following correctly matches an organelle with its function
Answer: please give full question
Explanation:
use the information you learned from the dna microarray to write an argument to convince smokers to stop smoking.
One of the main reasons you should give up smoking is because it can impact Cytochrome P450, a gene that is raised in cancer patients and is not increased in non-smokers.
What conclusions can be drawn from microarray data?Using microarray technology, we can check whether genes his cancer cells have increased, decreased, turned on, or turned off. that the gene was not impacted by the cancer cell.
What does a DNA microarray's yellow color indicate?If a spot turns yellow, it means that the gene was neither robustly expressed nor considerably silenced in cancer cells. These components of your experiment will be obvious. There is no cDNA from the patient that has connected to the gene's DNA.
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choose all that are functions of platelets. multiple select question. promote clotting and also initiate dissolution of clots present phagocytized antigens on their membranes release factors that attract wbcs release vasoconstrictors
Platelets promote clotting and also initiate dissolution of clots, release vasoconstrictors, and release factors that attract WBCs. The correct options are A, C, and D.
What are platelets?Our blood contains platelets, also known as thrombocytes, which are tiny, colourless cell fragments that help to stop or slow bleeding.
Our bone marrow, the sponge-like tissue found inside our bones, is where platelets are created. Red blood cells, white blood cells, and platelets are all created from stem cells found in bone marrow.
In addition to promoting clotting, platelets also help clots dissolve, release vasoconstrictors, and produce substances that draw WBCs.
Thus, the correct options are A, C, and D.
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Which of the following is one of the four basic cell types in the body?a. respiratoryb. epithelialc. endocrined. integumentarye. immune
One of the four basic cell types in the body is epithelial.
Thus, the correct option is B.
The term tissue is used to describe а group of cells found together in the body. The cells within а tissue shаre а common embryonic origin. Microscopic observаtion reveаls thаt the cells in а tissue shаre morphologicаl feаtures аnd аre аrrаnged in аn orderly pаttern thаt аchieves the tissue’s functions. From the evolutionаry perspective, tissues аppeаr in more complex orgаnisms.
lthough there аre mаny types of cells in the humаn body, they аre orgаnized into four broаd cаtegories of tissues: epitheliаl, connective, muscle, аnd nervous. Eаch of these cаtegories is chаrаcterized by specific functions thаt contribute to the overаll heаlth аnd mаintenаnce of the body.
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A specimen with cord blood is submitted to the transfusion sevice for routine testing. The following results are obtained: Anti-A 4+; anti-B 0; anti-D 3+; Rh-cont 0; DAT 2+ It is known that the father is group B, with the genotype cde/cde. Of the following 4 antibodies, which 1 is the most likely cause of the positive direct antiglobulin test? Anti-A, anti-D, anti-c, anti-C
Based on the results obtained, the most likely cause of the positive direct antiglobulin test (DAT) is anti-D.
The patient has a 3+ reaction to anti-D, indicating that there are red blood cells coated with this antibody in the sample. The positive DAT result indicates that there are antibodies or complement proteins attached to the red blood cells, which can cause hemolysis or immune-mediated destruction.
In this case, since the father is group B, it is unlikely that the patient has naturally occurring anti-A or anti-B antibodies, which would have been detected in the serological testing. Additionally, since the patient's Rh type is negative, it is unlikely that the positive DAT result is due to anti-C or anti-c antibodies, as these are typically associated with Rh-positive individuals.
Therefore, based on the results and information provided, the most likely cause of the positive DAT is anti-D.
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The role of a control in an experiment is to
Group of answer choices
provide a basis of comparison to the experimental group.
prove that a hypothesis is correct.
ensure repeatability.
The role of a control in an experiment is to provide a basis of comparison to the experimental group.
In an experiment, a control group is a group that experiences the same conditions as the experimental group with the exception of the independent variable under study. The inclusion of a control group serves the purpose of creating a baseline or standard against which the effects of the independent variable can be assessed.
Researchers can evaluate how the independent variable affects the experimental group by comparing it to a control group, which provides a specific or general condition.
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a hormone that is secreted from a cell is manufactured by ribosomes_____. a hormone that is secreted from a cell is manufactured by ribosomes_____. attached to the rough endoplasmic reticulum attached to the plasma membrane inside the nucleus attached to the golgi apparatus
The hormone secreted from a cell is manufactured by the ribosomes is (a) attached to the rough endoplasmic reticulum (RER).
Rough endoplasmic reticulum (RER) is one of the two types of endoplasmic reticulum. It is covered by ribosomes all over that are involved in the synthesis of proteins. The RER is attached in continuous with the membrane of the nucleus.
Hormones are the chemical messengers that are present in the blood stream, involved in regulating various body functions. Hormones can be made up of proteins, steroids, etc. The examples of hormones are: growth hormone, glucagon, luteinizing hormone, insulin, oxytocin, etc.
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match the following. 1. the blending of two traits in a heterozygous individual multiple alleles 2. where more than two alternatives for a gene exist a. incomplete dominanceb. multiple alleles
The blending of two traits in a heterozygous individual multiple alleles a. incomplete dominance
Incomplete dominance is a type of genetic inheritance where the phenotype of the offspring is a blend of the phenotypes of the two parents. In other words, the offspring's phenotype is neither completely dominant nor completely recessive to either parent but somewhere in between. This occurs when the alleles of the gene in question are not completely dominant or completely recessive, so the expression of the alleles blend together. For example, if a red flower and a white flower are crossed, the offspring may be a pink flower. This is because the pink is the result of red and white blending together. In incomplete dominance, the phenotype of the offspring is a mixture of the two parents, while in complete dominance, the offspring expresses only one of the two parent’s phenotypes.
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Arteries carry blood at high pressure, while veins carry blood at low pressure.
Explain how their structures are related to these functions.
TIP
Start by making a list of bullet points of all the relevant information you can think of. Then
organise your points into a logical sequence. Write your final answer in full sentences.
Answer:
Arteries have thick walls and small lumens to withstand the high pressure of blood being pumped from the heart. Veins, on the other hand, have thinner walls and larger lumens to accommodate the lower pressure blood being returned to the heart. These structural differences help each type of vessel carry out its specific role in the circulatory system and maintain proper blood flow and pressure.
For the cross in Part B, predict the frequencies of each of the phenotypes in the F1 progeny, and determine the genotype(s) present in each phenotypic class. Complete the diagram by dragging the correct label to the appropriate location. Labels can be used once, more than once, or not at all.
The multiplication rule is used to calculate the frequencies of the four phenotypic classes.
What does genetics' rule of multiplication entail?The probability of inheriting numerous, independently occurring genetic features simultaneously is determined by the product (or multiplication rule). By multiplying the odds for each genotype together, this likelihood is determined.
For instance, the likelihood of the green progeny's development depends on inheriting a y allele from both parents (probability = 12 x 12 = 14). They thus make up 14 of the total progeny.
Similar to the wrinkled children, which account for 12 of the total progeny because getting a r allele from both parents is necessary for their creation (probability = 1 x 12 = 12).
Apply the multiplication rule to determine their frequency because the [wrinkled, green] progeny are concurrently green and wrinkled and these events are independent: 14 x 12 = 1/8.
RrYY, RrYy, 3/8 (x2)
rrYY, rrYy, 3/8 (x2)
1/8 - Rryy
1/8 - rryy
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Testosterone is a cholesterol containing hormone produced by interstial Leydig cells inside the testes. Testosterone is circulated by the bloodstream to a variety of target cells within the body including the Sertoli cells responsible for spermatogenesis where it moves directly through the cell membrane to find a receptor inside the cells. Which of the following is true regarding testosterone?a. Testosterone is a lipid-based steroid hormone involved in endocrine signaling.b. Testosterone is a protein hormone involved in paracrine signaling.c. Testosterone is a protein hormone involved in endocrine signaling.d. Testosterone is a lipid-based steroid hormone involved in paracrine signaling.
The correct answer is "a. Testosterone is a lipid-based steroid hormone involved in endocrine signaling."
What is the role of testosterone?Testosterone is a steroid hormone, which means that it is derived from cholesterol and has a lipid structure. Steroid hormones are hydrophobic, or water-insoluble, and are able to diffuse across cell membranes to reach their target cells. In this way, testosterone is able to move directly through the cell membrane of the Sertoli cells to bind to its receptors inside the cells.
Testosterone acts through endocrine signaling, which means that it is produced and secreted by specialized cells, the interstitial Leydig cells in this case, into the bloodstream and travels through the circulatory system to reach its target cells. Endocrine signaling allows hormones to reach target cells that are far away from the site of production and to coordinate the function of cells and organs throughout the body.
Therefore, "a. Testosterone is a lipid-based steroid hormone which is involved in endocrine signaling" is the correct statement regarding testosterone.
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Homology refers to features that are inherited from a shared ancestor from two distinct species. The best explanation for the high degree of homology in the DNA of dogs and wolves is that a very recent common ancestor is shared by dogs and wolves.
Dogs and wolves have high homology due to their shared ancestry from a common ancestor 10 million years ago, resulting from domestication 15,000 years ago.
Dogs and wolves are both Canidae, a family of carnivorous mammals that includes jackals, foxes, and coyotes. It is believed that the common ancestor of all Canidae lived about 10 million years ago in Eurasia. Therefore, the high degree of homology in the DNA of dogs and wolves is a result of their shared ancestry. Dogs were domesticated from wolves about 15,000 years ago, so the two species are relatively closely related.
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_________is often referred to as the "energy currency of the cell." Please do not spell the entire name of the molecule, use its acronym.
ATP is often referred to as the "energy currency of the cell."
Adenosine 5'-triphosphate, or ATP, is a key molecule involved in intracellular energy storage and transmission. Often referred to as the energy currency of the cell, it can be compared to storing money in a bank.
ATP is commonly referred to as the cell's "energy currency" because it provides readily releasable energy at the bond between the second and her third phosphate groups. ATP synthesized in mitochondria is the dominant energy source for crucial biological functions such as muscle contraction, nerve impulse transmission, and protein synthesis.
Most ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is found in membranes of cellular structures called mitochondria. In plant cells, this enzyme is also found in chloroplasts.
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How does gel electrophoresis allow scientists to separate DNA samples based on their size? (Your answer must include the terms positive charge and negative charge!)
Answer
Gel electrophoresis and DNA
DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.