Answer:
Theory: a theory is an explanation for observations of the world, that is possibly true but not proven to be true. A theory is an explanation of a fact.
Hypothesis: a hypothesis is a theory or explanation at the start of a research that the research is designed to test. The hypothesis is based on facts, or the assumptions of the researcher, but it must be tested.
In the reactions of photosynthesis, simple
sugar molecules are manufactured in the
A. chloroplasts
B. mitochondria
C. stomates
E. Vacuoles
In the reactions of photosynthesis, simple sugar molecules are manufactured in the chloroplasts. Option A.
During photosynthesis, plants capture light energy in their leaves. Plants use the sun's energy to convert water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances such as cellulose and starch, which are used to build cell walls.
Light energy causes chemical reactions that break down carbon dioxide and water molecules and rearrange them to produce sugar and oxygen gas. After the sugar is produced, it is broken down by mitochondria into energy that can be used for growth and repair. The light-dependent reactions of photosynthesis take place in the thylakoid membrane of the chloroplast. Reactions that do not depend on light.
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A group of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. If the mitochondria were unharmed, what would happen to the overall function of the plant cells?
A.
The cells would not be able to replicate DNA, but would be able to break down waste.
B.
The cells would not be able to break down waste, but would be able to replicate DNA.
C.
The cells would not be able to make food, but would be able to release energy from biomolecules.
D.
The cells would not be able to release energy from biomolecules, but would be able to make food.
Reset Next
Choice C, Instead of producing food, the cells would be capable of releasing energy from biomolecules.
What purpose does a cell serve?They give the body structure, absorb nutrients from meals, turn those into energy, & perform certain tasks. Furthermore, cells are able to replicate themselves & contain the body's genetic information.
What's a cell, exactly?The smallest unit in biology that can sustain life on its own and compensates all living things as well as the body's tissues. The cellular membranes, the nucleus, as well as the cytoplasm are the three primary components of a cell. The substances that enter and leave the cells are governed by cell membrane, which encloses the cell.
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Option C is correct. The cells would not be able to make food, but would be able to release energy from biomolecules.
Why are chloroplasts and mitochondria important to plants?In plant cells, chloroplast is the site of photosynthesis. It converts light energy (sunlight) into chemical energy. Mitochondria are the plant cell's power plants, producing most of the energy needed for the cell's biological functions. Produces ATP, the energy currency of plant cells. These two organelles are found in plant cells, but only mitochondria are found in animal cells.
How do plant chloroplasts and mitochondria work together?In plant cells, chloroplasts convert light energy into chemical energy, which is used by mitochondria to produce ATP. increase. Optimal carbon fixation and plant growth require the tightly coordinated operation of these two energy-converting organelles.
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Which of the qualities is a major difference between all spore-dispersing and seed-dispersing plants? select all that apply.
The gametophytes of seed plants are never exposed to the outside environment, and in seed plants, dispersed spores contain a multicellular gametophyte. These traits are a major difference between all spore-dispersing and seed-dispersing plants.
The movement, spreading, or transportation of seeds away from the parent plant is referred to as seed dispersal in spermatophyte plants. Because of their restricted mobility, plants rely on a range of dispersal vectors, including both abiotic vectors like the wind and living vectors like birds, to spread their seeds. Plants whose seeds are dispersed by the wind include orchid seeds, dandelions, swan plants, cottonwood trees, hornbeams, ash, cattails, puya, and willow herbs. When seeds are dispersed using this method, they float away from the parent plant. Spore dispersal happens in two steps. Spore discharge or release comes first. Dispersal away from the parent is the next step. For the release and spread of their spores, fungi have developed a variety of diverse processes. Spores are spread by plants like mosses, liverworts, and hornworts.
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PLEASE HELPPP
What is the relationship between interphase and S phase during the cell cycle. Make sure you describe both phases.
I need a paragraph explaining if mutations are harmful or beneficial to an organism using claim evidence and reasoning. pls help
Answer :
Harmful Mutations :
Imagine making a random change in a complicated machine such as a car engine. The chance that the random change would improve the functioning of the car is very small. The change is far more likely to result in a car that does not run well or perhaps does not run at all. By the same token, any random change in a gene's DNA is likely to result in a protein that does not function normally or may not function at all. Such mutations are likely to be harmful. Harmful mutations may cause genetic disorders or cancer.
Beneficial Mutations :
Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism’s changes of surviving or reproducing, so they are likely to become more common over time.
Most multicellular organisms execute complex developmental programs that ensure the production of functioning organisms; these developmental programs are heavily dependent on coordinated changes in.
Most multicellular organisms execute complex developmental programs that ensure the production of functioning organisms; these developmental programs are heavily dependent on coordinated changes in gene expression.
What is gene expression?
Gene expression refers to the process where the genetic code present in the DNA is used to make a functional product, usually a protein.
Gene expression is important for the production of proteins that are essential to the metabolic activities of the organism.
Gene expression is regulated at various levels in an organism in order to ensure that only proteins required by the body are produced.
The levels of regulation of gene expression include;
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What organelle is known as the highways of the cell because nutrients travel through it?.
Answer: The correct answer to that should be the endoplasmic reticulum.
Explanation: I hope this helps!!!!!
can a cell that is normally non-diving be stimulated to divide? when does this happen and how is it accomplished in an organism?
A cell that is non-diving may be stimulated to divide when a cell signal pathway leading to cell division by a growth factor ligand that is released by a cell nearby may be initiated.
Non-dividing cells may be stimulated to divide when the body requires an increase in cells. Signals extracellular in nature stimulate cytokines. Through this process, cell communication is established. Similarly, cells may enter from a state of division into non-division in the absence of a mitogenic signal.
It must be noted that cell growth is vital to cell division. Without cell growth, cell mass increment is not entirely possible. Unicellular organisms require nutrients alone for cell growth. However, multicellular organisms require signals from other cells for both cell growth and division.
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What would happen if your cell membranes did not contain sodium-potassium pumps?.
The sodium-potassium pump's responsibility is to keep the axon prepared for the next signal.
The sodium-potassium pump operates in what ways?In spite of steep concentration gradients, sodium and potassium ions are moved by the sodium-potassium pump system. Three sodium ions are pumped out of the cell and into the extracellular fluid, while two potassium ions are moved into the cell where there are high potassium levels.
The pumps are used to create an electric potential to transmit signals, so they never run out of sodium or potassium. A signal is produced electrically when the cell membrane is activated, allowing ions to flow. To recreate the electric potential, these ions can then be pumped against the gradient.
Maintaining nerve cell voltage requires the sodium-potassium pump.
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a group of bloodborne proteins, which, when activated, enhance the inflammatory and immune responses and may lead to cell lysis is:
The complement system is a collection of proteins found in the bloodborne proteins that, when activated, boost immunological and inflammatory responses and may cause cell lysis.
Refers to a collection of at least 20 dormant bloodborne proteins that serve as a key mechanism for the body's removal of foreign substances.
bloodborne proteins , commonly known as blood proteins, are the proteins found in blood plasma is called cell lysis. They perform a variety of tasks, such as lipid, hormone, vitamin, and mineral transport, immune system activity, and immune system functioning. Various other blood proteins have enzyme, complement, protease, and kinin precursor functions. Contrary to popular assumption of cell lysis, hemoglobin is a substance carried by red blood cells, not blood serum, and is not a component of blood.
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Demethylation and acetylation lead to an open chromatin structure and are associated with ________regions of genomes.
Demethylation and acetylation lead to an open chromatin structure and are associated with euchromatic regions of genomes.
What is chromatin?
The term "chromatin" refers to a compound of DNA and proteins that makes up the chromosomes found in the cells of higher creatures like humans. The enormous amount of DNA in a genome is packaged by many proteins, most notably histones, into a shape that can fit inside the cell nucleus.
Long DNA molecules are bundled into smaller, denser structures as the main purpose.
Therefore, Demethylation and acetylation lead to an open chromatin structure and are associated with euchromatic regions of genomes.
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GIVING BRAINLIEST HURRY what causes a pulse in an artery?
Answer:
when the heart pushes blood into the aorta, the blood's impact on the elastic walls creates a pressure wave that continues along the arteries
a pathogen known as ? is found naturally in the environment and has an affinity for warm water locations like cooling towers and ornamental fountains.
a pathogen Legionella bacteria are found naturally in the environment and have an affinity for warm water locations like cooling towers and ornamental fountains.
Legionella bacteria grow in building water systems.
Water that contains Legionella bacteria can spread into small droplets that people can inhale.
When a human being inhales water that contains legionella bacteria they can be infected by a disease called Legionnaires' disease.
Legionarraeris' disease is also called Pontiac fever.
Pontiac fever causes a human being to have signs like
feverheadachesmuscle achesThe disease is tested through a urine test.
This disease is commonly treated by taking a lot of fluids, taking pain relievers, and muscle relaxants.
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which of the following are sustainable farming techniques? select the two correct answers.(1 point) responses tilling soil frequently tilling soil frequently limiting agriculture to rural areas limiting agriculture to rural areas planting trees in between rows of crops planting trees in between rows of crops planting a single crop over a large area planting a single crop over a large area rotating crops each year rotating crops each year
The following which are sustainable farming techniques include the following below:
Planting trees in between rows of crops.Rotating crops each year.What is Farming?This is referred to as the practice which involves the cultivation of crops and rearing of livestock for different types of purposes.
Farming techniques involve different parameters such as the soil and the environment in which they are planted, For example tilling the soil frequently will increase the risk of erosion as the uppermost part of the soil are easily washed away by water, wind etc.
Sustainable farming practices include planting trees in between rows of crops as it shields the young plant from harsh conditions and ensures that its growth and development is at optimum.
Rotating crops each year rotating crops each year ensures that some plants supply certain types of nutrients which are used by subsequent ones.
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Unit 5 Lesson 4: Farming Land Use
Answer: I Just Took The Quick Check For: Farming Land Use Quick Check.
All The Answers are,
Which of the following are sustainable farming techniques? Select the two correct answers.
A. planting trees in between rows of crops
E. rotating crops each year
In which situation would hydroponics be most useful for sustainable farming?
C. a desert area with limited rainfall
Which issue does terrace farming help solve?
A. heavy rains washing away soil from mountainous farms
By The Way all the answer's switch around so since I said a and E
E might be B, or A might be C. so don't look at the letters just look at the words.
Anyways all these answers are correct 100% 3/3
explain why seedless vascular plants have similar environmental restrictions to nonvascular plants despite having an efficient system for water transport.
In contrast to non-vascular plants, which lack distinct vascular tissues, seedless vascular plants have vascular tissues that carry water and other nutrients throughout their bodies.
What similarities do seedless vascular plants and non-vascular plants share?
The existence of green chlorophyll pigments and chloroplasts, which enable plants to perform photosynthesis, is the primary similarity between these two plant families. Plants are now able to create their own food, and as a result, they are the ecosystem's main producers.
Non-vascular plants have no stems, roots, or leaves, yet seedless vascular plants do have these features.
Therefore, seedless vascular plants still require water for fertilization, just like nonvascular plants.
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there are two types of cells, prokaryotic and eukaryotic. the first prokaryotic cell fossil records date back to about 3.5 billion years ago, while the first cells resembling eukaryotes appear about two billion years later. although the types of cell share some similarities, compartmentalization is not a shared characteristic. describe the endosymbiotic theory. explain the relationship between the functions of endosymbiotic organelles and their free-living ancestral counterparts. provide evidence that supports the endosymbiotic theory.
According to the endosymbiotic theory, some eukaryotic cell organelles, like mitochondria and plastids, descended from prokaryotes that were free to move around.
What is the significance of endosymbiotic theory?The theory of endosymbiosis. claims that once free-living prokaryotes, such chloroplasts and mitochondria, gradually lived symbiotically within bigger cells to become contemporary eukaryotes.
The endosymbiotic idea dates back more than a century.
It contends that the organelles evolved from prokaryotes through (endo)symbiosis, which accounts for how chloroplasts and mitochondria resemble free-living prokaryotes.
These contain the nucleus and mitochondrion of the primary ancestral eukaryote as well as the nucleus, mitochondrion, and chloroplast of the secondary endosymbiont.
Since the secondary mitochondrion has never been discovered, many genes from the subordinate genomes have been lost to evolution.
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Compare and contrast similarities and differences in the replication of a herpes simplex virus.
Both the herpes simplex virus and human immunodeficiency virus are sexually transmitted. The difference is that if a patient is positive for HSV, it doesn't mean they are also HIV positive. However, someone who is infected with HSV may have a higher risk of contracting HIV.
Herpes simplex is a disease that affects the skin and mucous membranes. Herpes simplex is caused by HSV-1 and HSV-2. The symptom of this disease is the appearance of small bubbles (vesicles) that break easily. The first infection is usually localized and tends to come and go. Herpes can attack parts of the body such as the eyes, lips, mouth, skin, genitals, and sometimes the brain.
Human Immunodeficiency Virus (HIV) is an attacker of CD4 T lymphocyte cells. The course of HIV infection can take a long time, which is around 10 years. Starting from primary infection, the spread of the virus to lymphoid organs, the clinical latency period, the emergence of HIV expression, to death. Death usually occurs 2 years after the onset of clinical illness which is characterized by the absence of an immune response to all infectious pathogens. Symptoms that can be seen include chronic diarrhea, weight loss, fatigue, fever, shortness of breath, and white spots on the tongue.
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What is the regulatory gene cascade triggered by bicoid that leads to the differentiation of segments along the anterior-posterior axis of the fly embryo?.
The bicoid initiates a regulatory gene cascade that causes the differentiation of segments along the anterior-posterior axis of the fly embryo. These genes include segmentation genes, hox genes, and effector genes.
Many genes encode transcription factors that, in turn, trigger the expression of more transcription factors, resulting in cascades of gene expression that amplify the initial signal through a series of signaling pathways.
The differentiation of the embryo into distinct segments is governed by roughly 25 genes in fruit flies, with the number and arrangement of the segments changing as a result. Whole groups of segments are typically disrupted by mutations in these genes.
Hox genes, which belong to the family of homeotic transcription factors, are important for regulating the body plan along the craniocaudal axis and defining the segment identity of tissues inside the embryo.
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When a population contains two separate groups that can no longer interbreed and produce fertile offspring, then ______ has occurred.
Speciation has occurred.
What is Speciation?
The formation of new species from already existing populations is called Speciation. It is the evolutionary process of formation of new and distinct species. These species evolve by modifications of genes.
The newly formed species are reproductively isolated from the old species. They cannot reproduce with the previous species.
Speciation is of the following types:
Allopatric speciationParapatric speciationPeripatric SpeciationSympatric SpeciationGeographical isolation and hybridization are some factors that affect Speciation.
Therefore, when a population contains two separate groups that can no longer interbreed and produce fertile offspring, then Speciation has occurred
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4. you amplified a segment of your own mitochondrial dna. do you expect the sequences of your pcr product vary from those of your classmates? why or why not? (2 points)
The number of DNA molecules in the reaction doubles after each round of PCR. The sequences of the PCR product will be the same for everyone because the same region is being amplified, despite the fact that mitochondrial DNA is inherited from the mother and hence varies from student to student.
What influences the PCR product's size?
The PCR primers' structure determines the size of the PCR result. To amplify a region of interest from a double-stranded DNA template, the user designs PCR primers. The two primers, which are always present, are made to border the area of interest.
Each student has a unique mitochondrial DNA profile because it is inherited from the mother.
Therefore, As a result of amplifying the same region, everyone's PCR product will have the same sequence.
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In the somatic cell of a mammalian female, one of the two x chromosomes is randomly inactivated and condensed, resulting in the formation of a ________.
In the somatic cell of a mammalian female, one of the two x chromosomes is randomly inactivated and condensed, resulting in the formation of a Barr Body.
One of the two X chromosomes is randomly and irreversibly inactivated in cells other than egg cells very early in female embryonic development. The term "X-inactivation" or "lyonization" refers to this process. Females, like males, have one functioning copy of the X chromosome in each body cell thanks to X-inactivation. In placental mammals like humans, the choice of which X chromosome will be inactivated in a certain embryonic cell is random, but if an X chromosome is inactivated, it will be inactive for the lifetime of the cell and its offspring in the organism (its cell line). The outcome is that all of the organism's cells have an equally distributed distribution of inactivated X chromosomes, with roughly half of the cells having an inactivated paternal X chromosome and the other half having an inactivated maternal X chromosome (X-inactivation).
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which sentence is true of both animal cells and plant cells
The sentence is true of both animal cells and plant cells is that they contain mitochondria that break down molecules into energy.
What are the main difference between plant cell and animal cell?The basic difference between plant cell and animal cell is that plants and animals both are living organisms which are different in structure, function and metabolism. The plant cells exhibit chlorophyll pigment whose function is to trap light energy from the sun which is used for the process of photosynthesis.
Plant and animal cells differ by their structure. The cell wall is the outer covering of the plant cell it provides rigidity and strength to the structure of the plant cell but animal cell lacks the cell wall.
Therefore, The sentence is true of both animal cells and plant cells is that they contain mitochondria that break down molecules into energy.
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2.the nutrients in foods perform functions in the body, what are they and briefly describe the nutrients (from above) involved in these functions?
Carbohydrates, lipids, proteins, vitamins, and minerals are just a few of the different types of nutrients found in food.
The body's main source of energy is carbohydrates. Per gram, they offer roughly 4kcal.
Proteins are essential for the structure, operation, control, and repair of the body's tissues and organs since they carry out the majority of the work in cells. They also support our body's ability to fight off diseases. They support the growth of muscles, hair, and nails.
Fats: Fats give the body energy. Each gram of fat has more than twice as many calories as a gram of protein or carbohydrate (9 kcal per gram).
Vitamins: Vitamins assist in controlling bodily chemical processes. They aid in warding off infections and keeping our bodies healthy.
Minerals: Minerals are nutritional ingredients that are essential to numerous bodily processes. They are necessary for the body's healthy development and upkeep.
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mass movement of water along pressure gradients is known as . describe how capillary action helps/hurts this concept.
Bulk flow is the term for the large-scale movement of water along pressure gradients.
Small lipid-insoluble solutes found in water use it to pass through the capillary wall. A liquid's capacity to go through small openings devoid of outside aid or resistance is known as capillary action.
Intermolecular forces between the surrounding solid surfaces and the liquid cause it to happen. In plants, capillary motion is visible. Branching moves water up the tree, evaporation causes depressurization, and roots receive additional osmotic pressure.
According to the hypothesis of cohesion and adhesion in plants, water movement in the xylem depends on the adhesion of water molecules to vessel walls and their cohesion, as well as on high water pressure in the plant's substratum and low pressure in its extreme regions, such as the leaves.
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the hydrologic cycle distributes water across the globe. which part of the hydrologic cycle refers to the water vapor released by plants?
The part of the hydrological cycle that deals with the water vapor released by plants is called transpiration.
What is transpiration?The hydrological cycle tells us about the process in which water passes through different compartments around the hydrosphere. The transpiration of plants is when they are going to lose water in the form of steam, this water is what the plant is not going to use and it also cools it since this steam is generated when there are high temperatures
The water will be released through the stoma which are small microscopic pores.
Therefore, we can confirm that the part of the hydrological cycle that deals with the water vapor released by plants is called transpiration.
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a scientist wants to perform a monohybrid cross for stem length in pea plants that will show all possible genotypes in the progeny. which pea plants will they cross?
In a extensive experience, the time period "genotype" refers to the genetic makeup of an organism; in different words, it describes an organism's complete set of genes. In a greater narrow feel, the term may be used to consult the alleles, or version sorts of a gene, which might be carried through an organism.
A genotype is a scoring of the sort of version present at a given vicinity (i.e., a locus) inside the genome. it can be represented via symbols. as an instance, BB, Bb, bb can be used to symbolize a given variation in a gene.
An apparent manner to discern out your genotype is to have a genetic check achieved. corporations like 23andMe can try this pretty inexpensively these days. For this to work, although, scientists must have found out the genetic distinction that leads to a trait.
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Question # 2
Multiple Choice
IPM plans can include the possible use of pesticides to deal with invasive
pests of all types, including insects, bacteria, fungi, viruses, and even
mammals.
O True
O False
The statement IPM plans can include the possible use of pesticides to deal with invasive pests of all types, including insects, bacteria, fungi, viruses, and even mammals is True.
What are Integrated Pest Management procedures or IPM strategies?Integrated Pest Management procedures or IPM strategies are aimed at controlling all types of plagues in extensive crops, which may include the use of biological control methods such as competitive species in the case of some arthropods.
Therefore, with this data, we can see that Integrated Pest Management procedures or IPM strategies are based on the control of any animal pest.
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what is the likely mechanism controlling these interactions and the densities of these trees within certain successional stage forests?
A successional stage forest may go through nudation, invasion, competition and co-action, reaction, and climax or stabilization.
What phases of succession do forests go through?Forest succession, also known as forest development, is divided into four stages by forest ecologists. They are I stand initiation, (ii) stem exclusion, (iii) understory reinitiation, and (iv) stable state.
What does a succession look like?Even in mature or climax groups, succession is possible. When a tree falls in an established forest, for instance, it's possible that sunlight will once more be able to penetrate the forest floor, allowing new growth to start. With new, smaller plants, succession would start in this situation. Communities are continuously developing and changing.
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When glycolysis breaks down sugar, those carbon atoms become part of what due to the citric acid cycle?.
In order to produce the new, 2-carbon acetyl CoA molecule, carbon is taken out of the three-carbon pyruvate molecule produced during glycolysis. Two oxygens from pyruvate are taken up by the eliminated carbon, which leaves the body as carbon dioxide.
Glycolysis and the citric acid cycle are linked by the transition process. The transition reaction changes the two molecules of glycolysis' 3-carbon pyruvate into two molecules of acetyl Coenzyme A, two molecules of carbon dioxide, and two molecules of the 2-carbon molecule.
The cycle converts the acetyl coenzyme A's chemical energy into the nicotinamide adenine dinucleotide's reducing power. The TCA cycle is a component of the broader glucose metabolism, which involves the oxidation of glucose to produce pyruvate, which is then further oxidized and enters the TCA cycle as acetyl-CoA.
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What phase of the cell cycle are chromosome pairs separated by the retraction of spindle fibers?.
The phase of the cell that chromosome pairs separate by retraction of spindle fibers is anaphase.
During anaphase, sister chromatids are separated simultaneously at the centromere. Separated chromosomes are pulled to opposite poles of the cell by the mitotic spindle. In anaphase, each daughter cell ensures that it receives an identical set of chromosomes. the stage is marked by the splitting of centromeres as well as the segregation of chromatids
The stage occurs in both meiosis and mitosis where it takes place before metaphase
In metaphase, the cell's nucleus collapses and the cell's chromosomes condense and move together, aligning them to the center of the dividing cell the process of metaphase prepares for anaphase.
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