Answer:
2. Cannot be passed on to offspring.
Explanation:
Mutations that occur in skin or lung cells have little effect on the evolution of a species because mutations in these cells cannot be passed on to offspring.
During an auditory transduction, across what membrane does ion flow vary?.
Auditory transduction is the process by which sound waves are converted into electrical signals that can be interpreted by the brain. This process involves a complex interplay of different structures and mechanisms, including the flow of ions across certain membranes.
One key membrane involved in auditory transduction is the hair cell membrane, which is found in the cochlea of the inner ear. Hair cells are specialized sensory cells that detect sound vibrations and generate electrical signals in response.
When sound waves enter the ear, they cause the hair cell membrane to vibrate, which in turn causes ion channels to open and allow ions to flow into the cell. This influx of ions generates an electrical signal that is transmitted to the auditory nerve and eventually to the brain.
The flow of ions across the hair cell membrane is critical to the process of auditory transduction, as it helps to convert the mechanical energy of sound waves into electrical signals that can be processed by the nervous system.
The precise nature of this ion flow varies depending on the specific ion channels and receptors involved, as well as the frequency and intensity of the sound stimulus. However, overall, the flow of ions across the hair cell membrane represents a key aspect of auditory transduction, highlighting the complex and intricate nature of the human auditory system.
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The fact that trees are more likely to be vertical or horizontal than slanted is an example of ____.
The fact that trees are more likely to be vertical or horizontal than slanted is an example of natural selection.
As the tree grows, it is subject to the forces of gravity, wind, and other environmental conditions. Gravity pulls the tree downwards, while wind and other environmental conditions push against the tree in various directions.
Over time, the forces of gravity and the environment shape the tree into a vertical or horizontal position as the tree seeks to achieve the most stability and support. The vertical or horizontal orientation of the tree gives it the best chance to survive and thrive in its environment.
This natural selection helps the tree to be better adapted to its environment, as its shape will help it to better withstand strong winds, support more weight, and absorb more sunlight. Trees that are slanted are often suffering from external forces such as strong winds, or are in a location that is not ideal for its environmental needs.
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Using content clues from paragraphs 2-5, how are conditions on Earth "mimicked" within the space suit?
The spacesuit mimics Earth by regulating air pressure, temperature, and oxygen and protecting the astronaut from harmful UV rays, micrometeoroids, and debris.
C is the correct answer.
Astronauts are shielded from those sweltering conditions by their spacesuits. In order to breathe while in the vacuum of space, astronauts wear spacesuits. During spacewalks, the suits have water to drink. They guard against injuries caused by impacts with tiny pieces of space dust.
The protective gear keeps astronauts from becoming overly overheated or cold. Additionally, astronauts can breathe oxygen while working in space. Drinking water is kept in the suits. They protect astronauts from space dust injuries as well.
In order to maintain a body temperature that is same to what we would experience in our own environment on Earth, spacesuits are built with temperature control systems. In reality, a spacesuit is made up of fourteen layers made of various materials, each of which is intended to protect the person in some way.
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Using content clues from paragraphs 2-5, how are conditions on Earth
"mimicked" within the space suit?
A The spacesuit mimics Earth by allowing astronauts to move around
space easier with the Manned Maneuvering Unit.
B The spacesuit mimics Earth by regulating air pressure, temperature, and oxygen and protecting the astronaut from harmful UV rays, micrometeoroids, and debris.
C Astronauts do not need to worry about their safety while in space.
D None of the above can be considered a mimicry of conditions found
on Earth.
Is good if rats add proteins on their diet ? will it increase their growth ?
How could the rabbit look different?
The rabbit could look different in many ways, such as changes in its fur color, ear length, body size, and tail shape; the rabbit's physical appearance can be altered through genetic engineering, which could result in new features like bioluminescent fur or unusual eye colors.
A change in fur color could create rabbits with unique patterns or a completely different hue, such as blue or purple. Altering the length of their ears could lead to breeds resembling the lop-eared rabbits with floppy ears or tall rabbits with erect ears.
Modifying their body size could result in mini rabbits or giant rabbits, while changing their tail shape could lead to rabbits with shorter, bushier tails or longer, streamlined tails. Moreover, genetic engineering could enable the creation of rabbits with unique traits such as larger or smaller eyes, extra appendages, or adaptations for different environments.
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Seafood watch recommends which seafood _______. A. To buy or avoid b. To catch and sell c. To harvest sustainably d. Is safe to eat please select the best answer from the choices provided a b c d
A . to buy or avoid , Seafood Watch assesses how specific fisheries or farms perform against our rigorous environmental sustainability standards and then assigns ratings based on the outcomes. We suggest buying Best Choice, Good Alternative, or recommended certified seafood where possible or choosing a plant-based alternative.
Before receiving FDA approval, the tTAV protein had to be tested for any potential toxicities to other native animals. Why would this be part of the approval
The reason testing the tTAV protein for potential toxicities to other native animals is part of the FDA approval process is to ensure that the protein does not pose any unintended harm to the ecosystem or biodiversity.
Before receiving FDA approval, the tTAV protein had to be tested for potential toxicities to other native animals because it is important to assess the safety of the protein for the environment and other organisms that may come into contact with it.
The tTAV protein is a genetic tool used in biotechnology to control pests and invasive species. It works by modifying the DNA of the targeted species, which can have potential ecological consequences if the modified organisms were to escape from the intended habitat or interact with non-targeted species.
Therefore, the FDA and other regulatory agencies require thorough testing to ensure that the use of tTAV protein does not cause harm to non-targeted species, including other animals and plants. Toxicity testing involves exposing various species to the protein to assess its potential adverse effects on them.
These tests can help to identify any potential risks associated with the use of tTAV protein and to develop appropriate measures to minimize those risks. The goal is to ensure that the use of tTAV protein is safe and environmentally sustainable.
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Alzheimer's disease: piecing together the evidence assignment answers????
Alzheimer's disease is a neurodegenerative disorder characterized by cognitive decline and memory loss. It is an incurable and progressive condition that is estimated to affect more than five million Americans.
To better understand this devastating illness, researchers have put together evidence from a variety of sources. These include brain imaging studies, studies of genetic risk factors, and analyses of postmortem brain tissue from Alzheimer's patients.
Collectively, these studies have provided important information about the pathology of Alzheimer's and its potential causes. Through this research, scientists have been able to identify changes in the brain that are associated with the illness, and to develop treatments that may slow its progression or alleviate some of its symptoms.
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A student went for a short run to investigate the effect of physical activity on his pulse rate.
The resting pulse rate for the student was 60 beats per minute and during exercise his pulse rate
increased to 144 beats per minute.
Calculate the percentage increase in pulse rate
ca2 is an intracellular messenger involved in which of these processes? choose one or more: triggering of embryonic development after fertilization nerve cell depolarization initiation of muscle contraction secretion of hormones release of neurotransmitters
Ca2 is an intracellular messenger involved in which of these processes initiation of muscle contraction therefore the correct option is C.
An intracellular messenger is a molecule that transmits information within a cell. It can be used to send signals from the extracellular environment to the inside of the cell or among components within the cell itself. Examples of intracellular messengers include cyclic-AMP, calcium ions, hormones, cytokines and growth factors.
These molecules bind to specific receptors on the target cells to elicit a response through a variety of pathways. The intracellular messenger then has an effect on gene expression, protein synthesis, enzyme activity and other biological processes.
Hence the correct option is C.
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Which of the following is not a function of the cell membrane?
(A) Regulating the movement of substances into and out of the cell
(B) Providing support and structure for the cell
(C) Converting sunlight into energy
(D) Allowing the cell to communicate with other cells
Answer: C
Explanation:
The cell membrane controls/ regulates the transport of materials that enter into the cell.
What starch is used for the translucent skin of some vietnamese dumplings?.
The starch used for the translucent skin of some Vietnamese dumplings is mung bean starch.
Mung bean starch is a type of starch that is extracted from mung beans, which are commonly used in Asian cuisine. It is often used as a thickening agent or to make translucent or clear noodles, dumpling skins, and other types of desserts.
Mung bean starch has a neutral taste and is gluten-free, making it a popular choice for those with dietary restrictions. In Vietnamese cuisine, mung bean starch is commonly used to make bánh bột lọc, a type of small, clear dumpling filled with shrimp and pork.
The starch is mixed with water to make a dough, which is then filled and steamed. The resulting dumplings have a translucent skin that is slightly chewy in texture.
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On the diagram below what is the name of region B?
Answer:
C. Parietal lobe
Explanation:
The parietal lobe is at the top region of the brain right behind the frontal lobe (A; the frontal lobe is at the front of the brain) and is for sensory perception/integration (i.e., processing sensory information (touch, taste, smell, temperature, etc.) from the outside world.
the process by which one species gradually transforms itself into a new species over time is called\
The process by which one species gradually transforms itself into a new species over time is called speciation. Speciation is a fundamental aspect of evolution, and it involves the splitting of a single lineage into two or more distinct species.
This process occurs as a result of genetic changes within populations, leading to the development of unique characteristics that distinguish them from their ancestral species.
There are several mechanisms that drive speciation, including geographical isolation, ecological differentiation, and sexual selection. Geographical isolation happens when populations become physically separated due to barriers such as mountains, rivers, or human-made structures. Over time, these isolated populations experience different environmental pressures and accumulate genetic differences, eventually leading to the formation of new species.
Ecological differentiation is another mechanism that can lead to speciation. It occurs when populations adapt to distinct ecological niches within their environment, resulting in the development of unique traits that enable them to exploit specific resources or habitats. As these populations continue to evolve, they become more specialized, reducing the likelihood of interbreeding and promoting the formation of new species.
Sexual selection is also a crucial factor in the speciation process. It involves the preferential mating of individuals based on specific traits, such as coloration or ornamentation. Over generations, these preferred traits become more pronounced within the population, and eventually, individuals with these traits may no longer be able to mate successfully with those from other populations, leading to reproductive isolation and the emergence of new species.
In summary, speciation is the process by which one species transforms into a new species over time through genetic changes and various evolutionary mechanisms, including geographical isolation, ecological differentiation, and sexual selection.
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State the law of conversation of energy. (Use scientific language)
Answer:
The law of conservation of energy, which is a fundamental principle in physics, states that energy cannot be created or destroyed, but it can be transformed from one form to another or transferred from one system to another.
This means that the total amount of energy in a closed system remains constant over time, and any energy lost by one part of the system must be gained by another part of the system. The law of conservation of energy applies to all physical processes, including mechanical, electrical, and chemical processes, and is a consequence of the time-invariance of physical laws.
It is a cornerstone principle in the study of thermodynamics and is crucial to our understanding of the behavior of the universe at the most fundamental level.
The law states that "Energy can neither be created nor destroyed adn can be only converted from one form to another."
Thus this means that the total amount of energy in the universe is constant and it cannot be created or destroyed it conly changes its forms.
For example, if we throw a ball from a height we convert its potential energy to kinetic energy. In this case all the potential energy is converted to its kinetic energy in a ideal system and thus no energy is destroyed or created.
Also in a motor vehicle the engine converts the chemical energy present in the fuel to mechanical energy of the car. It is a very important part of mechanics on whose bases many laws are formulated.
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(b) It is possible to remove the cell wall of a plant cell by using an enzyme. Suggest and explain what would happen if a cell that had been treated in this way, and also an untreated cell, were both put into distilled water for an hour. (c) Cells are taken from one plant, treated with the enzyme described in (b), and then grown on a culture medium. There, each of these cells divides to form a group of cells. Each group of cells then develops into a new plant. (1) State the type of division that the nuclei of these cells have undergone. (il) Suggest and explain a possible commercial use of this procedure.
Answer:1) type of cell division= mitosis
2) commercial use of enzyme (likely cellulase) is in the textiles industry
Explanation:
somatic cells undergo mitosis, sex cells undergo meiosis
cellulase would soften the raw materials for processing in the textile industry
Worth 30 pts!!!
within a population of rabbits, black fur (b) is dominant over white fur (b). a scientist observes 22%white rabbitson an island. calculate the allelicand genotypic frequencies for the population by solvingfor p, q, p2, 2pq and q2.
please help!!! worth 30
Sure, I can help you with that! Here are the steps to calculate the allelic and genotypic frequencies for the population of rabbits:
First, let's define some terms:
Allele: a variant form of a gene that occurs at the same position on a chromosome.
Genotype: the combination of alleles at a particular gene locus.
Frequency: the proportion of individuals in a population that have a certain genotype or allele.
Now, let's use the information provided in the question to calculate the allelic and genotypic frequencies:
The allelic frequency (p) of the dominant black allele is 0.22 / (0.22 + 0.78) = 0.22 / 0.90 = 0.242 (rounded to four decimal places).
The allelic frequency (q) of the recessive white allele is 0.78 / (0.22 + 0.78) = 0.78 / 0.90 = 0.861 (rounded to four decimal places).
The frequency of the black/black (BB) genotype is 0.22/0.78 = 0.289 (rounded to four decimal places).
The frequency of the white/white (ww) genotype is 0.78/0.78 = 1.000 (rounded to four decimal places).
To calculate the genotypic frequencies, we need to combine the alleles for each genotype:
The genotype BB has one black allele and one black allele, so its genotypic frequency is 1 x 1 = 1.
The genotype WW has two white alleles, so its genotypic frequency is 2 x 2 = 4.
Now we can calculate the overall frequency of each genotype in the population:
The frequency of the BB genotype is 1 / (0.22 + 0.78) = 0.454 (rounded to four decimal places).
The frequency of the WW genotype is 4 / (0.22 + 0.78) = 0.546 (rounded to four decimal places).
So, the allelic frequency of the dominant black allele is 0.242, and the allelic frequency of the recessive white allele is 0.758. The genotypic frequency of the BB genotype is 1, and the genotypic frequency of the WW genotype is 4.
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6. Charles Darwin is given credit for being the true father of the Theory of Natural Selection. Alfred
Wallace is also sometimes given partial credit for coming to the same conclusion without ever talking
with Charles Darwin. Which of the following statements is NOT part of the Darwin-Wallace Theory
of Natural Selection?
There is no statement that is NOT part of the Darwin-Wallace theory of natural selection.
What is Darwin-Wallace theory of natural selection?The Darwin-Wallace theory of natural selection includes the following four statements:
Individuals within a population exhibit variation in traits.Some trait variations are heritable, meaning they can be passed down from one generation to the next.More offspring are produced than can survive, leading to a struggle for existence.Individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring.Therefore, the answer to your question is that there is no statement that is NOT part of the Darwin-Wallace theory of natural selection.
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What best describes this sentence taken from a
summary of this book?
OIt is objective because it is based on facts and does
not present feelings or opinions.
It is objective because it presents personal feelings
and opinions in addition to the facts.
It is subjective because it is based on facts and
does not present feelings or opinions.
It is subjective because it presents personal feelings
and opinions in addition to the facts.
The best description of this sentence taken from a summary of this book is:
It is objective because it is based on facts and does not present feelings or opinionsTherefore option A is correct.
What is a subjective statement?A subjective statement is described as being affected by personal views; in other words, it is peculiar to a particular individual.
We then can make the following inference:
so the third option must be wrong and hence discarded - "subjective because it is based on facts and does not present feelings."Meanwhile An objective statement is described as being neither affected nor distorted by personal or individual judgements or interpretation.
We then can make the following inferences:
The second option must wrong and hence must be discarded as well - "it is objective because it presents personal feelings and opinions in addition to the facts."Learn more about objective statement at:
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if your mitochondrial dna was sequenced and compared to the sequence of mitochondrial dna isolated from your mother's maternal grandmother (the mother of your mother's mother) would you expect to see a significant match to yours and why?
Yes, I would expect to see a significant match between my mitochondrial DNA and that of my mother's maternal grandmother because mitochondrial DNA is passed down maternally, which means that all individuals in the maternal line will have the same mitochondrial DNA sequence.
Mitochondrial DNA is unique in that it is inherited only from the mother, so it provides a direct link to maternal ancestry. This type of DNA is present in mitochondria, which are organelles within cells that generate energy.
Unlike nuclear DNA, mitochondrial DNA does not undergo recombination during reproduction, which means that it is transmitted intact from mother to offspring. As a result, all individuals in the maternal line will have the same mitochondrial DNA sequence, with the exception of any rare mutations that may have occurred during transmission.
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All living things need energy. Use the terms
autotroph and heterotroph to describe how
each of the organisms in the illustration below
obtains energy.
Grass
Rabbit
Fox
Answer:
Grass----autotroph
Rabbit - - - - heterotroph
Fox-----heterotroph
What features did you use to endify which school was human and which was chimpanzee
To differentiate the chimpanzee school from the human school, I used three main features. First, I compared the student body size. The chimpanzee school had a much smaller population than the human school, which made it easy to distinguish.
Secondly, I looked at the curriculum. The chimpanzee school had a much more limited selection of classes than the human school, so that was another distinguishing feature.
Finally, I looked at the physical environment. The chimpanzee school was much more primitive, with a much simpler infrastructure, compared to the human school.
In conclusion, by comparing the size, curriculum, and physical environment, I was able to easily determine which school was the chimpanzee school and which was the human school.
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What is the most likely result of damage to the thlaykoid membranes in a
plant?
A. A decrease in glucose production
B. An increase in ATP production
C. An increase in photosynthesis
D. A decrease in exocytosis
SUBMIT
Answer:
A. decrease in glucose production
Explanation:
The damage would affect the flow of electrons through the mitochondria. The damage to the thylakoid would affect the splitting of the water molecule.
When you exhale air flows through respiratory structures in which sequence?.
When you exhale, air flows through respiratory structures in the following sequence: bronchioles, bronchi, trachea, pharynx, and out through the nostrils or mouth.
During exhalation, the diaphragm and intercostal muscles relax, causing a decrease in the volume of the thoracic cavity. As a result, air is pushed out of the lungs and flows through the bronchioles, which are small air passages in the lungs, and then into the larger bronchi and trachea, which are the main airways leading to the pharynx, where the air is finally expelled out of the body through the nostrils or mouth.
This sequence of respiratory structures allows for the efficient exchange of gases in the lungs, allowing oxygen to be taken up by the body and carbon dioxide to be released.
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2021 task 1 :gautrain tourism skill assessment task
The Gautrain tourism skill assessment task is designed to evaluate the proficiency and competence of tourism professionals in Gautrain in providing high-quality tourism services to local and international tourists.
The task is meant to ensure that tourism professionals have the necessary skills and knowledge to offer top-notch services to customers and enhance the tourism industry in Gautrain.
In 2021, the task 1 of the Gautrain tourism skill assessment will focus on assessing the language proficiency of tourism professionals.
This is because effective communication is crucial in the tourism industry as it helps to build rapport with customers, provide accurate information, and ensure customer satisfaction.
To successfully complete task 1, tourism professionals will be required to demonstrate their ability to communicate fluently and effectively in at least two languages, including English.
They will be evaluated based on their pronunciation, grammar, vocabulary, and ability to understand and respond to customer queries.
In conclusion, the 2021 task 1 on Gautrain tourism skill assessment task is focused on evaluating the language proficiency of tourism professionals in Gautrain. By doing so, it will help to ensure that tourists receive high-quality services and ultimately boost the tourism industry in Gautrain.
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The binomial nomenclature for a housefly is Musca Domestica and the nomenclature for a house fowl is Gallus gallus Domestica. Domestica being the species. According to my textbooks, a species is a classification of living organisms that can interbreed to produce a fertile offspring. Does that mean that a House fowl and a House fly can interbreed?
Answer:
No.
Explanation:
Although the housefly and house fowl share the same species name "Domestica," they cannot interbreed due to their different genus names - "Musca" for the housefly and "Gallus" for the house fowl. Interbreeding is only possible between organisms of the same genus, which is a higher level of classification than species.
It's important to note that house fowls (Gallus gallus domesticus) and houseflies (Musca domestica) are vastly different creatures, with unique physical and behavioral characteristics. House fowls belong to the class Aves, while houseflies belong to the class Insecta. Despite both being commonly found in human habitats, they are not closely related and cannot interbreed.
Answer:
no is the appropriate andwer
What would be the effect of cutting a person's corpus callosum down the middle?
This would cause the person to be incapable of orienting himself or herself in space.
This would cause a lack of coordination between the two hemispheres.
This would cause the person to go blind.
This would cause the person to go deaf.
Answer:
During a corpus callosotomy, a doctor called a neurosurgeon, cuts the brain’s corpus callosum. This band of nerve fibers carries messages between the brain’s two halves, or hemispheres. A corpus callosotomy stops seizure signals from going back and forth between the two hemispheres. so b is your answer
Explanation:
PLEASE GIVE ME BRAINLIEST
This would cause a lack of coordination between the two hemispheres of the brain. The corpus callosum is a bundle of nerve fibers that connects the left and right hemispheres of the brain, allowing them to communicate and work together. Cutting it down the middle would sever this connection, resulting in the two hemispheres working independently from each other. This could cause difficulties with tasks that require both hemispheres to coordinate, such as complex problem solving or motor tasks. However, it would not affect the person's ability to orient themselves in space, go blind, or go deaf.
(-_-;)・・・
can you think of a co-called fruit that is botanically speaking, not a fruit at all?
Answer:
cucumber or tomato may be
Cross a person who is heterozygous A heterozygous positive with a person who is AB-
Draw a Punnett square
Explanation:
To create a Punnett square, we need to write the genotypes of the parents and then use them to determine the possible genotypes and phenotypes of their offspring.
Let's use "A" to represent the allele for blood type A, "B" for the allele for blood type B, and "O" for the allele for blood type O.
The genotype of the first person who is heterozygous A and positive can be represented as: Aa Rh+.
The genotype of the second person who is AB- can be represented as: AB Rh-.
We can now create a Punnett square by combining the gametes of each parent to determine the possible genotypes and phenotypes of their offspring.
| A a
---|---------
A | AA Aa
B | AB Ab
O | AO Ao
The Punnett square shows that the possible genotypes of the offspring are AA, AB, Aa, Ab, AO, and Ao.
The possible blood types of the offspring can be determined by using the ABO blood type system. The genotypes AA and AO both result in blood type A, while the genotype AB results in blood type AB. The genotypes Aa and Ab both result in blood type A as well. Therefore, the possible blood types of the offspring are A and AB.
The Rh factor is determined by a separate gene and follows a different inheritance pattern, which is beyond the scope of this Punnett square.
All of the following conditions are reasons for a cell to enter the G0 phase except:_____. A. A lack of growth factors. B. A decreased presence of cyclin-dependent kinases. C. A high number of previous cell divisions. D. The detection of incorrectly-replicated DNA
All of the following conditions are reasons for a cell to enter the G₀ phase except: D. The detection of incorrectly-replicated DNA.
The G₀ phase is a period of cellular quiescence, or non-division, that is often referred to as the "resting stage" of the cell cycle. There are several conditions that can lead to a cell entering the G₀ phase, including a lack of growth factors, a decreased presence of cyclin-dependent kinases, and a high number of previous cell divisions.
However, the detection of incorrectly-replicated DNA is not a reason for a cell to enter the G₀ phase. The G₀ phase is a temporary halt in the cell cycle, which allows for the repair of any damaged DNA that may have occurred during the replication process.
In the event of an incorrect replication, the newly replicated DNA may be destroyed and the damaged cell may undergo apoptosis, or programmed cell death, rather than entering the G0 phase.
Therefore, correct option is D.
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