The selection of plants and livestock by agriculturalists is a critical component of successful farming.
It is important to choose the right plants and animals in order to maximize yields, reduce risk, and ensure sustainability. There are several criteria that agriculturalists use to make their selections.
The first selection criteria is climatic adaptability. This means ensuring that the plants and animals being chosen are suitable for the climate, soil, and other environmental conditions of the farm. It is important to choose varieties that are disease resistant, drought tolerant, and adapted to local conditions. Additionally, plants should be chosen based on their yield potential, harvest season, and marketability.
The second selection criteria is genetic variability. This means selecting plants and animals with a wide range of genetic diversity. This diversity is important for ensuring that the crops and livestock are able to adapt to changing environmental conditions. Additionally, genetic diversity helps to reduce the risk of disease and pest outbreaks.
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Which beaker will have a net movement of water from the cell to the surrounding solution
Osmosis is the process by which water molecules pass across a cell's partly permeable membrane from a solution with a high concentration of water molecules to one with a lower concentration.
There will be a net transfer of water from the cell to the surrounding solution in a beaker with a hypertonic solution in respect to the cell (also known as osmosis). This is the case because water will flow from a region of lower solute concentration to an area of greater solute concentration in order to balance the solution concentration since osmosis the concentration of solutes in the cell is higher than that in the surrounding solution.
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How were scientists able to determine that DNADNA , and not some other molecule, serves as the genetic material in bacteria and bacteriophages
Hershey and Chase demonstrated that DNA is the sole substance transmitted directly from bacteriophages into bacteria when the bacteria are infected by these viruses by utilizing radioactive labels that would integrate selectively into either DNA or protein but not both.
Alfred Hershey and Martha Chase began looking for genetic material in organisms in 1952. Their investigations proved unequivocally that DNA is genetic material. Bacteriophages (viruses that attack bacteria) were key to Hershey and Chase's experiment.
Proteins were assumed to be the molecules that carried genetic information for many decades. Several researchers' efforts resulted in the revelation that DNA is the genetic material. Griffith found the process of change along the road.
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What could occur if the feedback loop of the knee reflex was cut off at any point along its path?
This is an illustration of a reflex, which is an uncontrollable muscle reaction brought on by the tap of a rubber hammer on a tendon.
What is a feedback loop?
The absence of reflex reactions may indicate injury to the spinal cord, a nerve root, a peripheral nerve, or a muscle.
Two positive feedback loops are involved in the defecation reflex. These loops are the stretch receptors in the sacral parasympathetic system and the rectal walls.
Therefore, a reflex is an uncontrollable muscle reaction brought on by the tap of a rubber hammer on a tendon.
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Net redistribution of extracellular fluid by bulk flow from the plasma compartment into the interstitial fluid compartment is referred to as
Filtration is the term used to describe the net redistribution of extracellular fluid by bulk flow from the plasma compartment into the interstitial fluid compartment.
The process of forcing fluid and dissolved chemicals past capillary walls and into the interstitial fluid is known as filtering. The hydrostatic pressure gradient also referred to as the hydrostatic pressure difference between the plasma compartment and the interstitial fluid compartment, is what propels this process.
The filtration process is essential for maintaining the balance of fluids and electrolytes in the body and for the removal of waste products.
Filtration is one of the three basic mechanisms that contribute to the movement of fluid and dissolved substances across the capillaries. The other two mechanisms are diffusion and osmosis.
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Indicate whether the glven act would create water retention or water loss In the body.
Dry mouth ~ Increased osmolarity of blood aldostorenone hyposecretion ~ Decreased renal tubular reabsorption of water Renin release ~ Hyponatremia
Increased blood pressure ~ Ingestion of water
ADH hypersecretion ~ Hyperkalemia
Increased water permeability of the DCT and collecting ducts of the kidneys ~ Hemorrhage
Exercise in a warm climate
ADH and testosterone increase the risk of heart and volume as the water is absorbed into the bloodstream into to the capillaries, bringing the blood salt concentration back to normal.
What does the renin enzyme do in response to a lower ph quilt in the kidney?An enzyme known as renin is released by kidney cells in response to low blood pressure. The kidneys reabsorb salt due to renin. Water retention is a constant side effect of sodium reabsorption. Blood pressure and volume are restored as a result.
Which hormone promotes water retention while guarding against dehydration?A deficiency of renin - angiotensin system (ADH), also known as prolactin, usually prevents hydration, or the kidneys and liver inability to react to ADH, are the two main causes of diabetes insipidus. The kidneys may hold onto the body's fluids thanks to ADH. The steroid.
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When calculating heritability in finch beak size using parent/offspring data, we find that 70 percent of the variation in the trait is due to genetics. What might explain the remainder of the variation
The remaining 30 percent of the variation in finch beak size that is not explained by genetics is likely due to environmental factors such as nutrition, disease, and other non-genetic influences. For example, during years when there is a shortage of food or a disease outbreak, beak size may be smaller due to malnourishment or increased mortality of individuals with smaller beaks. Additionally, other factors such as temperature and precipitation can also affect beak size.
THE HERITABILITYHeritability is a measure of the proportion of variation in a trait that is due to genetics. Heritability can be estimated using parent-offspring data, where the similarity of a trait in parents and their offspring is compared. If the heritability is high, it means that the trait is largely determined by genetics, and if the heritability is low, it means that the trait is largely influenced by environmental factors.
In the case of finch beak size, if heritability is estimated to be 70%, it means that 70% of the variation in beak size among finches is due to genetics. However, the remaining 30% of the variation may be due to environmental factors such as:
Nutrition: Beak size can be affected by the availability and quality of food, as well as the timing of food availability. For example, during years when food is scarce, finches may have smaller beaks due to malnutrition.Climate: Temperature, rainfall and other weather conditions can affect the growth and development of the finches and their beaks.Disease: Diseases can affect the growth and development of the beaks, and also can affect the health and survival of the finches.Competition: The degree of competition for food and other resources can also affect beak size.Other non-genetic factors such as random events that happen during development can also play a role.It's important to note that heritability estimates can vary depending on the population and the specific conditions under which the trait is measured.
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Which of the following statements is most accurate in comparing the sexual orientations of women and men: Women's sexual orientations seem to be more plastic or flexible than those of men.
Men tend to avoid labeling their orientations, whereas women tend to spend considerable time labeling themselves accurately.
Men's sexual orientations change more over time than do the orientations of women.
The ways that men and women experience their sexual orientations are remarkably similar.
Women's sexual orientations seem to be more plastic or flexible than those of men.
Sexual orientation is an ongoing romantic or sexual attraction to people of the opposite sex or gender, the same sex or gender, or both sexes. Heterosexuality, homosexuality, and bisexuality encompass these attractions, while asexuality is sometimes considered a fourth category.
The American Psychological Association defines sexual orientation as "a person's sense of identity based on those attractions, related behaviors, and membership in a community of others who share those attractions".
Behavioral science uses androphilia and gynephilia to describe sexual orientation instead of gender. Androphilia is sexual attraction to masculinity; gynephilia to femininity. Psychological research distinguishes sexual preference from sexual orientation, which overlaps. Bisexuals may prefer one sex over the other. Sexual orientation is not a choice, but sexual preference may be.
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How often should IV IO epinephrine be administered during neonatal resuscitation if it is ineffective?
According to current NRP recommendations, a low-lying umbilical venous catheter (UVC) is the best way to administer epinephrine. This is followed by a 0.5–1 ml normal saline flush. During resuscitation, 1.0 mg (10 mL of a 1:10 000 solution) of epinephrine hydrochloride is advised to be administered intravenously (IV) every 3 to 5 minutes.
For the medication to reach the central compartment, each peripheral injection dose should be followed by a 20-mL flush of IV fluid. According to the most recent resuscitation recommendations, epinephrine should be administered if the newborn's heart rate is still below 60 beats per minute after 30 seconds of what appears to be effective ventilation with chest rise and 30 seconds of coordinated chest compressions and ventilations.
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Write the correct answer on the line provided.
Baby Kilgore was vomiting almost continuously. The medical term for this excessive vomiting is ___________________
Answer:
Begulling
Explanation:
It is the correct medical term for excessive vomiting
What religions allow premarital sex?
All major faiths condemn premarital sex, but Muslims appear to take Islam's prohibitions more seriously.
Adamczyk and Hayes wanted to know if individual choice or national culture was more to blame for the lower rate of premarital sex among Muslims. Premarital sex is a practise whereby two people engage in sexual activity before becoming married. Many cultures forbid it as a moral flaw, and many religions consider it to be sinful. In India, adult premarital activity is legal. Premarital sex between two individuals (above the age of 18) is not clearly prohibited in our charter.
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What did you notice in the music when the dynamic marking changed?
Dynamics play a big role in music. We frequently experience feelings like rage and even excitement when we listen to punk music. Comparing this to listening to ballads is completely different.
What in the music when the dynamic marking changed?The print notations known as dynamic markings are used to instruct musicians on how loud or soft to play a piece of music. Words, word acronyms, or symbols can all be used as dynamic marks in music.
Therefore, Dynamics words for shifts include crescendo and decrescendo. The progressive increase in volume of the music is known as a crescendo. A diminuendo, also known as a decrescendo, is when the music progressively gets weaker.
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How should the sperm motility be categorized in this microscopic field of a semen sample viewed at 400X magnification
The sperm motility can be categorized in this microscopic field of a semen sample viewed at 400X magnification - Non-Progressive motility = 2; immotile = 3
Fast and slow progressive motility are calculated from the speed at which sperm migrating the flagella migrate at a certain volume percentage (range 0% to 100%) by counting 200 sperm.
Decreased sperm motility may be a symptom of disorders associated with male accessory gland secretion and the sequential ejection of these glands.
Routine sperm analysis should contain at least 50% progressively motile class A and B sperm. Sperm viability should be checked if more than 50% of the sperm are fixed. Persistent reduced mobility is a good indicator of infertility and is actually the more important outcome when making decisions about treatment options for couples.
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How often do orcas need air?
Orcas can't even come close to holding their breath for as long. Their maximum duration is approximately 15 minutes, but we typically observe them surfacing for air every 3-5 minutes when traveling or every minute when moving quickly.
The orca, also known as the "killer whale," is the largest member of the dolphin family and is a whale with teeth. These large marine mammals are easy to spot due to their black-and-white coloring, large dorsal fin, and sleek body. On the fluke's undersides, ventral surface, and lower jaw, bright white is the predominant color. The distinctive patterns serve as a method of concealment when they are searching for food.
Whales, like humans, breathe in oxygen through their lungs. However, rather than breathing through their mouths, they breathe through their nostrils, which are the blowholes on top of their heads. They can easily breathe through the blowhole without lifting their entire head out of the water.
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The point at which the nerves from the left side of the body cross over into the right side of the brain, and vice versa, is the __________. Group of answer choices
The point where the nerve passes from the left side of the body to the right side of the brain and vice versa is the medulla oblongata.
The medulla oblongata, also called the medulla oblongata, the lowest part of the brain, the lowest part of the brainstem. The medulla oblongata is connected to the midbrain via the pons, enters posteriorly into the spinal cord, and joins at an opening in the base of the skull (foramen magnum).
The left hemisphere controls the right half of the body, and vice versa because of a crossing of the nerve fibres in the medulla or, less commonly, in the spinal cord. Although the right and left hemispheres are mirror images of each other in many ways, there are important functional differences.
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Which of these statements is true?
c. The best fossils are formed during a cataclysmic event.
a. Younger strata are usually nearer the surface.
d. Rock strata are formed by volcanic activity.
e. Water’s ability to erode rock helps to explain how fossils are formed.
b. More recent fossils are in the deepest
'Younger strata are usually nearer the surface' is the true statement.
What do you mean by Strata?
Strata is a term that refers to the various layers of a rock formation. The term is used in a variety of fields, including geology, archaeology, and petrology. It describes the various layers of sedimentary rock that have been formed over time, as well as the different types of sedimentary rock that can be found in a strata.
This statement is true because younger strata (layers of rock or sediment) are generally deposited more recently and are therefore closer to the surface than older strata. This is because over time, as the Earth's surface erodes and is reshaped by various natural forces, the most recently deposited layers tend to be more exposed.
Hence, Option B is correct.
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Correct form of question:
Which of these statements is true?
a. The best fossils are formed during a cataclysmic event.
b. Younger strata are usually nearer the surface.
c. Rock strata are formed by volcanic activity.
d. Water’s ability to erode rock helps to explain how fossils are formed.
e. More recent fossils are in the deepest.
Elements, carbon, hydrogen and oxygen can be found in which macromolecule(s)?
O Protein
O Lipids
O Carbohydrates
O Nucleic Acids
O All of the above
O Proteins and Lipids only
O Carbohydrates and Nucleic Acids only
All of the above
Carbohydrates and lipids contain carbon,hydrogen, and oxygen. Protein also contains all of the above elements, including nitrogen. Nucleic acid contains the elements present in protein, including phosphorus. So basically, all the macro molecules have the 3 elements.
What are the types of mutation and examples?
A mutation is a change in the DNA of an organism, virus, or extrachromosomal cell's nucleic acid sequence. DNA or RNA may be present in the viral genome.
Mutations may be caused by mistakes in DNA replication, viral replication, mitosis, meiosis, or other types of DNA damage (such as pyrimidine dimers from ultraviolet radiation exposure). Damaged DNA may then experience error-prone repair, notably microhomology mediated end joining, or it may result in a replication mistake or an error during another kind of repair (translation synthesis). Mutations can also be caused by the insertion or deletion of a DNA sequence due to mobile genetic elements.
A mutation may or may not have an impact on the phenotype the observable characteristics of an organism. The part that mutations play in both healthy and biological processes that cause disease, including as cancer, evolution, and the maturation of the immune system, including junctional diversity. Mutation is the source of all genetic variation, and it also serves as the rationale for the operation of evolutionary forces like natural selection.
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Both ferns and cender trees rely on .............. To successfully fertilize themselves
Answer:
Explanation:
Both ferns and cedar trees rely on wind-dispersed pollen to successfully fertilize themselves.
Ferns are a group of vascular plants that reproduce via spores. These spores are produced in clusters called sori, which are found on the underside of fern fronds. The spores are released from the sori, and are carried away by the wind to fertilize other ferns.
Cedar trees, which are coniferous trees, also rely on wind to disperse their pollen. The male and female cones of the tree are separate, with the male cones releasing pollen into the air which is carried by the wind to fertilize the female cones on the same or nearby trees.
Both ferns and cedar tree do not produce flowers or rely on animal vectors (like bees or butterflies) for pollen transport, they use the wind to move their reproductive cells and complete the fertilization process.
What are the 3 main functions of meiosis?
Answer:
to produce gamate or reproductive cells.
to distinguish between male and female specie.
to produce tetrads having equal number of chromosomes
humans the allele for normal blood clotting, B is dominant to the allele for hemophilia, b. This is a sex-linked trait und on the X chromosome. The last Tsar of Russia (Nicholas II did not have hemophilia. His wife (Alexandra) also did not have hemophilia. They had a hemophiline son, and four normal daughters. What is/are the probable genotype(s) for each member of the family? Tsar Nicholas Empress Alexandra Daughter Olga Nikolaevna Daughter Tatiana Nikolaevna Daughter Maria Nikolaevna Daughter Anastasia Nikolaevna Son Alexei Nikolaevich
Tsar Nicholas: XBXB (since he does not have hemophilia, he must be homozygous dominant for the normal blood clotting allele)
Empress Alexandra: XBXb (since she does not have hemophilia, she must be a carrier of the hemophilia allele)
Daughter Olga Nikolaevna: XBXB or XBXb (she could have inherited the normal allele from her father or the carrier allele from her mother)
Daughter Tatiana Nikolaevna: XBXB or XBXb (same as Olga)
Daughter Maria Nikolaevna: XBXB or XBXb (same as Olga)
Daughter Anastasia Nikolaevna: XBXB or XBXb (same as Olga)
Son Alexei Nikolaevich: XbXb (since he has hemophilia, he must have inherited the hemophilia allele from his mother and a second copy from his father, who is the carrier).
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What are the hereditary diseases?
Sickle cell anemia, cystic fibrosis, and hemophilia are some of the hereditary diseases that occur because of changes in the genetic make of an organism.
Hereditary diseases usually referred to as inherited diseases or genetic disorders, are a group of genetic diseases that are brought on by changes in a person's genetic makeup (DNA). These changes are caused by mutation. This occurs when the normal bases in the DNA is replaced with the faulty base or mismatched base.
Then, these illnesses are passed down from one generation to the next, or in other words, they are inherited from one set of parents to another. For example, sickle cell anemia, cystic fibrosis, and hemophilia are some examples of hereditary diseases.
Because sickle hemoglobin requires two copies of the gene to be present, sickle cell anemia is referred to as a recessive condition. They must get one from each parent, which code for abnormal hemoglobin.
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What is a contrast to natural selection?
Artificial selection is a contrast to natural selection.
Natural selection is the process by which populations of organisms adapt and change. Individuals within a population are inherently variable. In other words, all individuals are different in some way. This variation means that some individuals have traits that adapt better to their environment than others.
Natural selection is the selection process that occurs as a result of an organism's ability to adapt to its environment. Artificial selection, on the other hand, is selective breeding imposed by an external entity, usually a human, to increase the abundance of desirable traits.
Examples of natural selection include : Selection of long-necked giraffes.
Examples of artificial selection include : Breeding different breeds of dogs and cows to produce the desired breed.
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how dors raising the temperature affect the rate of nuclear decay
HELP ASAP DYE TMRRW
Unlike chemical reaction rates, which vary with the conditions of a reaction, nuclear decay rates are constant..Raising the temperature has no effect on the rate of nuclear decay.
How does temperature impact the rate of decay?Decomposing organisms are less active in cooler temperatures, keeping the pace of decomposition low.
How is nuclear decay influenced by temperature?A speed of alpha, beta, & electron decays all rely on temperature & whether they are contained inside an insulating or conducting material, as demonstrated by numerous groups.
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According to the theory, why is it important to know how much of a pathogenic risk an item poses to an end-user? a) End-users must be informed of decontamination risks so they can choose whether to receive treatment or not b) The risk determines how long you can wait before cleaning it c) The risk of infection determines whether you should dispose of the item or not after use d) The risk determines how you must decontaminate an item so that the next user doesn't get infected
In order is for end-user to decide whether or not to get therapy, this information is required.
Why do we seek therapy?A treatment is anything that medical professionals perform on patients in order to manage a health issue, minimize its symptoms, or resolve it. Treatments may take the form of medication, counseling, surgery, or other measures. A health issue is said to be cured when a treatment permanently resolves it. Some medical conditions can be treated.
Meaning of treatment planPay attention to how it sounds. (TREET-mint plan) A thorough plan that includes information about the patient's ailment, the intended treatment outcome, available treatment modalities, potential side effects, and anticipated treatment time.
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What happens if a cell gets too large for the amount of DNA it has?
The cell is the fundamental unit of life and its structure is highly dependent on the amount of DNA it contains. As such, if a cell gets too large for the amount of DNA it has, it can lead to a range of problems for the cell. This is because the amount of DNA a cell contains determines its size, shape, and the number of processes it can carry out.
One consequence of having too little DNA for a large cell is that it will not be able to divide properly during cellular reproduction. This is because the DNA is responsible for providing instructions to the cell about how to divide and replicate itself, and if there is not enough DNA present, the cell will not be able to divide correctly. As a result, the cell may become deformed or contain abnormal structures or functions.
In addition, when the cell is too large for the amount of DNA it has, it often results in a decrease in the amount of proteins it produces. This is because the DNA is responsible for providing instructions to the cell on how to produce proteins, which are essential for cell growth and development. Without enough DNA to provide these instructions, the cell cannot produce the necessary proteins and is not able to function properly.
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HURRY I NEED HELP PLEASE
Describe the similarities and differences between alcoholic fermentation carried out by yeast to make alcoholic beverages and lactate-acid fermentation carried out within the human body. Source StylesFormatFontSize
The main difference between alcoholic fermentation and lactic acid fermentation is that of their end-products.
The primary distinction between lactic acid and alcoholic fermentation is that the latter results in the production of ethyl alcohol and carbon dioxide while the former yields lactic acid molecules from pyruvate.
Differences between the two processes include he following:
Pyruvate and lactate are produced directly after fermentation of lactic acid. Pyruvate is converted to ethanol by the two-step process of alcohol fermentation.End-products: Lactase and energy in lactic acid fermentation, while C02, alcohol, and energy in alcoholic fermentation are the end products. The enzymes involved in the fermentation processes of lactic acid are lactate dehydrogenase and pyruvate decarboxylase. Pyruvate decarboxylase and alcohol dehydrogenase are the two enzymes required for alcoholic fermentation.Similarities between the two processes include the following:
The two pathways convert ATPs from the breakdown of glucose.The two processes' major objective is to recycle NAD+ in order to keep glycolysis going and allow for the NAD+ to be reduced back to NADH in the process.Both processes release heat energy and are exergonic.Each produces 4 ATPs during glycolysis, the same amount as the other.To know more about fermentation, refer to the following link:
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a) In which diagram (1 or 2) would the person be experiencing summer? Why?
b) In which diagram (1 or 2) would the person he be experiencing Winter? Why?
In diagram 1, the person would experience summer whereas, in diagram 2, the person would experience winter.
How earth's axis is responsible for different seasons?The axis of planet earth is tilted at an angle of 23.5 degrees away from the vertical plane. During the rotation around its own axis, planet earth performs a wobbly movement in which its northern hemisphere comes closer to the sun while its southern hemisphere gets away from the sun and vice versa.
In months around June, the northern hemisphere is tilted toward the sun causing it to receive more direct sunlight compared to the southern hemisphere. This creates the summer season in the northern part. The southern hemisphere meanwhile experiences winter seasons.
In months around December, the northern hemisphere is tilted away from the sun while the southern hemisphere is tilted towards the sun. Hence, the north experiences winter while the south experiences summer season.
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Explain how the nucleotides dATP, dCTP, dGTP and dTTP serve both as a substrate and an source of energy for DNA polymerase.
DNTP stands for deoxyribose nucleotide triphosphate hired in PCR to extend the developing DNA strand. dATP, dTTP, dGTP and dTTP are 4 not unusual place dNTPs utilized in PCR.
The characteristic of dNTPs in PCR is to extend the developing DNA strand with the assist of Taq DNA polymerase. dNTPs include 4 fundamental nucleotides—dATP, dCTP, dGTP, and dTTP—as constructing blocks of latest DNA strands. These 4 nucleotides are commonly brought to the PCR response in equimolar quantities for highest quality base incorporation. Nucleotide triphosphate utilized in each DNA replication. That is DNTPS and transcription. That is anti pius due to the fact each replication and transcription are persistent techniques and the excessive dialysis of a bond withinside the NTP or D NTP is exotic, which lets in for our couple response.
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8.
How do animal and plant viruses acquire an envelope?
A.
They synthesise it.
B. From the culture growth medium
C.
D.
E. It is part of a wall of the bacterial cell.
From the nuclear membrane of the host cell
They take it from other viruses.
Cellular membranes in a process called budding animal and plant viruses acquire an envelope.
What is an envelop?
The cell membrane, cell wall, and outer membrane, if present, make up the cell envelope. Typically, prokaryotes like bacteria exhibit this envelope. It consists of a bacterium's cell wall and inner cell wall. The integrity of the cell's structure is provided by the cell envelope.
The cell wall, the cell membrane, and any outside membrane that may be present make up the cell envelope. The cytoplasmic membrane, cell wall, and capsule make up the cell envelope in Gram-positive bacteria with a single membrane.
The complex, dynamic, multilayered cell envelope serves to shield bacteria from their uncontrollable and frequently hostile surroundings. Most bacteria's cell walls can be divided into one of two categories.
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