Water content, ion content and blood sugar levels of the body need to be maintained, along with temperature.
In biology, homeostasis refers to the state of constant internal, physical, and chemical conditions maintained by living systems. This is the optimal state of the organism's functioning, and it includes many variables, such as body temperature and fluid balance, that must be kept within certain pre-set limits.
Homeostasis involves the receptor, the control center, and the effector. The receptor receives information about the changing environment, which is processed by the control center.
Homeostasis ensures that optimal conditions for enzyme action and all cell functions are maintained throughout the body. It refers to the maintenance of a consistent internal environment in the face of changing internal and external conditions. Controlling blood glucose concentrations in the human body is one of these.
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a researcher placed a culture of cyanobacteria under green lights. within a few weeks, the appearance of the cyanobacteria changed from green to red. the researcher claimed the color change in the culture was the result of an adaptation allowing greater photosynthesis.
The best argument in favor of this assertion is that green light causes an increase in the production of phycoerythrin pigment molecules, which allows more green light to be absorbed and speeds up photosynthesis.
What is the rate of photosynthesis?The effectiveness of the pigments that absorb sunlight during this process determines how much oxygen and simple carbohydrates (glucose molecules) are created by a unit of time, which is referred to as the photosynthesis rate.
The number of photons absorbed from solar radiation, which depends on the amount of sunlight and the classes or types of pigments present in the photosynthetic cells—either plan cell or possibly algal cells—is what causes the photosynthesis rate in a given environmental state to be very variable.
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(10.5) in mitosis, what could happen if cytokinesis occurred simultaneously with prophase instead of with telophase?
When cytokinesis occured simultaneously with prophase instead of telophase 4 daughter cells instead of 2 will be formed.
The phase of cell division known as cytokinesis is when a single eukaryotic cell divides into two daughter cells. Mitosis and meiosis' late stages of nuclear division are when cytoplasmic division starts or happens afterward.
The physical process that ultimately divides the parent cell into two identical daughter cells is known as cytokinesis.The cell membrane constricts at the cell equator during cytokinesis, creating the cleavage furrow, which is a cleft. End of telophase is the time of cytokinesis.
The final stage of mitosis, known as cytokinesis, is when a cell's cytoplasm and nucleus are divided into two identical daughter cells. Without cytokinesis, mitosis produces a cell with multiple nuclei but a linked cytoplasm (syncytium).
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When basilar membrane moves, ______ of spiral organ hair cells distort because they are anchored by tectorial membrane, distortion initiates nerves signals.
When basilar membrane moves, The stereocilia of spiral organ hair cells distort because they are anchored by tectorial membrane, distortion initiates nerves signals.
What is basilar membrane?
The basilar membrane is the major mechanical element that reside in the inner ear. Which can be seen as a stiff structural element within the cochlea of the inner ear that separates two liquid-filled tubes that run along the coil of the cochlea in the ear.
What are hair cell?
Hair cells which is also known as Cochlear hair cells are the primary sensory receptors of both the auditory system and the vestibular system in the inner ears of most if not all vertebrates. They can be found near the center of the basilar membrane where vibrations will be at it high point.
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light passes through the entire thickness of the neural layer of the retina to excite the photoreceptors.
A) True
B) False
Answer:
A. True
light passes through the entire thickness of the neural layer of the retina to excite the photoreceptors.
if cytosine makes up 42% of the nucleotides in a sample of dna from an organism. what percentage of nucleotides will be thymine?
Thymine will make up 8%. DNA is double stranded, and the same pairings of nucleotides always occur:
Cytosine and guanine couple (G-C)
Adenine and thymine are paired (A-T)
In this instance, cytosine accounts for 42%, which implies that guanine accounts for 42% as well. So, a G-C base pair makes up 84% of the DNA.One of the four nucleotide bases of DNA, along with adenine (A), cytosine (C), and guanine, is thymine (T) (G).
This leaves 16% for the A-T base pair: 8% adenine and 8% thymine. Thymine nucleotides on one strand pair with adenine bases on the other strand in a double-stranded DNA molecule. Information in DNA is encoded by the four nucleotide bases' order.
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what is the difference between the allosteric and torpedo models of eukaryotic transcriptional termination?
The difference between the allosteric and torpedo models of eukaryotic transcriptional termination is destabilization after transcription
The allosteric model is that RNA pol II becomes destabilized after transcription of the poly A signal . sequence while the torpedo model is that the polymerase is physically removed from the DNA.
The allosteric model suggests that termination occurs due to the structural change of the RNA polymerase unit after binding to or losing some of its associated proteins, making it detach from the DNA strand after the signal.Transcription termination occurs in a reaction coupled to RNA 3′-end processing. Most eukaryotic mRNA precursors are cleaved in a site-specific manner in the 3′-untranslated region, followed by polyadenylation of the upstream cleavage product. A large number of proteins is involved in these reactions.The concerted model of allostery, also referred to as the symmetry model or MWC model, postulates that enzyme subunits are connected in such a way that a conformational change in one subunit is necessarily conferred to all other subunits. Thus, all subunits must exist in the same conformation.
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place the following into the correct order to represent the effects of angiotensin ii on tubular reabsorption.
In the attached file, the effects of angiotensin II on tubular reabsorption are depicted in the proper sequence.
What is the process of tubular reabsorption?
The procedure that removes solutes and water from the filtrate and returns them to your circulation is known as tubular reabsorption. Reabsorption refers to the fact that this is their second absorption, the first being when they entered the circulation from the digestive tract following a meal.
The location of tubular reabsorption?
The second crucial stage in the production of urine is tubular reabsorption. Amino acids, glucose, and salts are only a few of the solutes that are mostly reabsorb able in the proximal portion of the tubule.
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under which circumstances are amino acids not metabolized via oxidative degradation? a. starvation b. plants growing in nutrient-rich soils c. normal protein turnover d. uncontrolled diabetes
Animals experience an oxidative breakdown of amino acids under three different metabolic conditions: 1. Some amino acids released from protein breakdown that are not required for new protein synthesis go through oxidative degradation during the normal production and destruction of cellular proteins (protein turnover).
Without going through oxidation, some amino acids can be deaminated to release NH3. (a) Amino acid dehydrases: Serine, threonine, and homoserine are the hydroxy amino acids. They go via non-oxidative deamination, which PLP-dependent dehydrases catalyze (dehydratases).In oxidative deamination, amino groups are taken off of amino acids, producing matching keto acids and ammonia in the process. As a result, amino acids are in a sense "wasted" when they are not employed to create protein or other nitrogen-containing molecules.
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In most eukaryotes, only about 1.5% of the genome codes for proteins. what types of sequences make up the rest of the genome?
Eukaryotes and prokaryotes produce ATP as their primary metabolic energy source during cellular respiration.
Eukaryote is a cell or organism with a well-defined nucleus. Eukaryotic cells have a nuclear membrane surrounding the nucleus, which contains well-defined chromosomes bodies containing genetic material.
The main difference between prokaryotes and eukaryotes is the membrane-bound nucleus. Most notably, eukaryotes have membrane-bound nuclei, whereas prokaryotes do not.
Eukaryotic cells. Eukaryotic cells are defined as cells containing an organized nucleus and organelles enclosed in membrane-bound organelles. Examples of eukaryotic cells are plants, animals, protists, and fungi. Your genome is organized into chromosomes.
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What type of reaction is hydrocarbon burning?
Type of reaction in hydrocarbon burning is called exothermic. Fuel and oxygen undergo an exothermic reaction that results in the gaseous material (smoke) as the end result. Compounds consisting solely of hydrogen and carbon are known as hydrocarbons.
Incomplete combustion and full combustion are the two forms of combustion. A hydrocarbon and oxygen undergo a chemical reaction known as hydrocarbon combustion, which results in the production of carbon dioxide, water, and heat. Organic substances known as hydrocarbons include both carbon and hydrogen. They are well known for being the main ingredient in fossil fuels including coal, natural gas, and oil.
If complete ignition happens, a hydrocarbon burns with a blue flame. Hydrocarbons begin to burn as their molecular weight rises, with a yellow flame indicating incomplete burning. With rising molecular weights, combustion of hydrocarbons becomes more challenging. An exothermic reaction constantly releases energy, frequently in the form of heat. Exothermic reactions are the universal type of combustion. A substance burns as it reacts with oxygen to release energy in the form of heat and light during combustion.
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which portion of the adrenal gland secretes epinephrine, norepinephrine, and a trace of dopamine? multiple choice question. adrenal cortex
Epinephrine, norepinephrine, and a very small amount of dopamine are secreted by the adrenal medulla component of the adrenal gland.
The triangle-shaped glands on top of the kidneys are known as the adrenal glands or suprarenal glands. Hormones produced by your adrenal glands regulate a number of vital bodily functions, including your immune system, blood pressure, stress response, metabolism, and others. The brain has some control over the adrenal glands.
The adrenomedullary gland consists of the medulla and cortex. The medulla generates catecholamines such as epinephrine and norepinephrine, whereas the cortex produces steroid hormones such as glucocorticoids, mineralocorticoids, and adrenal androgens.
The adrenal medulla produces the chemicals adrenaline (also known as epinephrine) and noradrenaline (also known as norepinephrine). These control blood pressure and heart rate and are essential in the stress response. They serve as neurotransmitters as well.
According to need, the body regulates corticosteroid levels. Early in the day tends to have substantially higher levels than later in the day. The levels of corticosteroids rapidly rise when the body is under stress due to disease or another factor.
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25. explain how two critical factors influence whether a species will evolve toward semelparity or iteroparity.
The possibility that the adult will live and reproduce again, as well as the likelihood that the young will survive and reproduce, are two important elements that determine whether a species will evolve toward semelparity or iteroparity.
One semelparity reproduces before dying. Iteroparity results in recurrent offspring. Semelparity is preferred and the survival rate of offspring is poor in changing or uncertain circumstances. Disease, competition, and predation are examples of variables that depend on density. Semelparity species size can be correlated positively or negatively with density-dependent characteristics. These growth-restricting iteroparity elements have a positive association with population size, increasing as the species grows.
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How many of the following can be used to distinguish a nematode worm from an annelid worm? WHY?
1. type of body cavity
2. number of muscle layers in the body wall
3. presence of segmentation
4. number of embryonic tissue layers
5. shape of worm in cross-sectional view
Type of body cavity - The body cavity of Annelids is a true coelom while in Nematodes it is a pseudo-coelom.
A number of muscle layers in the body wall - Annelids have longitudinal and circular muscles, whereas Nematodes have only longitudinal muscles.
Presence of segmentation - Annelids have segmented bodies, whereas the body of Nematode is not segmented.
The shape of worm in cross-sectional view - Nematodes are circular in cross-section whereas Annelids are cylindrical.
The nematodes or roundworms comprise the phylum Nematoda, with plant-parasitic nematodes otherwise called eelworms. They are a different creature phylum possessing a wide scope of conditions. Annelids are referred to normally as sectioned (ringed) worms. A few normal names for additional notable annelids incorporate night crawlers, sandworms, ragworms, bristle worms, and parasites. Annelid classes incorporate Oligochaeta, Hirudinea, Polychaeta, and Archiannelida. Polychaeta is a paraphyletic class of commonly marine annelid worms, usually called bristle worms or polychaetes. Each body fragment has a couple of beefy distensions called parapodia that bear many fibers, called chaetae, which are made of chitin.
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During splicing, which molecular component of the spliceosome catalyzes the excision reaction?
The correct option is C) RNA ,The term "RNA" stands for ribonucleic acid, a complex substance with a large molecular weight that is used in the creation of proteins in cells.
In some viruses, takes the role of DNA (deoxyribonucleic acid) as a carrier of genetic information.
Spliceosome is a complex machinery that performs splicing (removal of the introns from the primary mRNA transcript) and alternative splicing (re-combination of different exons which increases genetic diversity).
Spliceosome is composed of small nuclear RNAs (five of them) and proteins that together make snRNPs-small nuclear ribonucleo proteins.
Spliceosome is a ribozyme, meaning that RNAs inside are capable of catalyzing reactions. Catalyzed reactions by spliceosome are the removal of introns, and the ligation of the exons.
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Full Question ;
During splicing, which molecular component of the spliceosome catalyzes the excision reaction?
A) protein B) DNA C) RNAD) lipid E) sugar
If a cell increases the activity of its actin severing proteins, will it lead in the short term to more or less actin polymer mass?
Answer: If the concentration of free actin monomers is above the Cc for both the plus and minus ends, then MORE polymer will result. If the concentration of free actin monomers is below the Cc for both the plus and minus ends, then LESS polymer will result.
Explanation:
many organisms must consume others to survive. which scenarios represent consumptive species interactions?
The consumptive species interactions are:
1. A lion hunting a wildebeest in the savanna
2. A shark consuming a school of fish
3. A tree absorbing water and minerals from the soil
4. A bee collecting nectar from a flower
Organisms are living entities, such as plants, animals, fungi, and bacteria, that are composed of cells and have the ability to grow, reproduce, and adapt to their environment. They are the basis of all life on Earth.
1. A lion hunting and eating a wildebeest: This is an example of predation, where the lion is the predator and the wildebeest is the prey. The lion consumes the wildebeest in order to obtain energy and nutrients.
2. A heron eating a fish from a river: This is an example of predation, where the heron is the predator and the fish is the prey. The heron consumes the fish in order to obtain energy and nutrients.
3. A bee collecting nectar from a flower: This is an example of mutualism, where the bee and flower both benefit from the interaction. The bee collects nectar from the flower in order to obtain energy, while the flower is pollinated and reproduces.
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True or false? Because energy is lost during assimilation and production, less than 25% of the energy at one trophic level advances to the next trophic level.
Less than 25% of the energy at one trophic level goes to the next trophic level due to energy loss during absorption and production. This assertion is true.
The following organism that eats the creature from the previous trophic level does not receive any energy from the food it consumes. The remainder of the food's energy is lost through the heat in addition to being used for a variety of biochemical processes including digestion, absorption, and synthesis.
Some of the input energy is wasted during the process of converting energy from one form to another and moving it from one area to another. The input energy is lost during the production of electricity as well as other processes, such as when gasoline is used in cars.
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What happens to the mRNA before it leaves the nucleus for translation?
Once mRNAs leave for translation input the cytoplasm, they may be translated, saved for later translation, or degraded.
Before mRNA leaves the nucleus of a eukaryotic cell , a cap is introduced to 1 quit of the molecule, a poly A tail is introduced to the opposite quit, introns are removed, and exons are spliced together. This transcript need to go through processing (splicing and addition of 5' cap and poly-A tail) at the same time as it's miles nonetheless withinside the nucleus so that you can turn out to be a mature mRNA.
Messenger RNA (mRNA) mediates the switch of genetic facts from the mobileular nucleus to ribosomes withinside the cytoplasm, wherein it serves as a template for protein synthesis.The mature mRNA is exported from the nucleus to the cytosol, wherein it's miles translated at a ribosome to make a polypeptide.
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which of the following is the main factor for extinction rates? group of answer choices distance to the mainland island age the water between the islands (e.g., currents, temerature, depth) island size
Distance to the mainland island is the main factor for extinction rates according to the Island biogeography theory.
According to island biogeography theory, the size of the island and its distance from the mainland are the two variables that have the biggest impact on the species richness in natural ecosystems on an island. These elements have an impact on extinction and immigration rates simultaneously. The hypothesis states that islands that are closer to the continent have a better likelihood of absorbing immigrants than islands that are farther away. This is how distance has an impact. The relationship between island size and species diversity reflects the impact of size. Compared to larger islands, the likelihood of extinction is higher on smaller islands. More species may exist on larger islands than on smaller ones. When two islands of the same size and are separated from the mainland by different distances, they will both have the same rate of extinction, but the island closest to the continent will have a higher rate of immigration and, consequently, a greater variety of species. On the island that is nearer to the continent, the S value will be higher.
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which mammals were found to have a vocal range of 7 octaves, nearly twice that of humans?
Bats were found to have a vocal range of 7 octaves, nearly twice that of humans.
What is vocal range?
Vocal range, in its broadest sense, refers to the entire range of notes that a singer's voice is capable of producing, from the lowest note to the highest note. Range, then, is the difference between the highest and lowest notes a singer is capable of singing.
Three and a third octaves are typical for human vocal range.
Being put into one of these categories merely indicates where your voice is most naturally strong; it does not preclude you from singing other notes. These vocal range categories are bass, baritone, tenor, alto, mezzo-soprano, and soprano, in that order.
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are any organisms harmed during symbiotic relationships 
Answer:
No
Explanation:
organisms are not typically harmed during symbiotic relationships. Symbiotic relationships are mutually beneficial for both organisms involved, and they can range from commensalism, where one organism benefits and the other is unaffected, to mutualism, where both organisms benefit.
the ability of some microbes, such as trypanosoma or giardia to alter their surface molecules and evade destruction by the host's antibodies is called\
The ability of some microbes, such as trypanosoma or giardia to alter their surface molecules and evade destruction by the host's antibodies is called antigenic variation.
The immune system employs a large, Y-shaped protein called an antibodies (Ab), also known as an immunoglobulin (Ig), to identify and eradicate foreign substances such as dangerous bacteria and viruses. The antibody recognizes the antigen, also referred to as the pathogen's antigen. In order for these two structures to bind together exactly, each "Y" tip of the antibody has a paratope (like to a lock) that is unique for one specific epitope (similar to a key) on the antigen. A pathogen or an infected cell can either be quickly eliminated or designated by an antibody for attack by other immune system components via this binding mechanism (for example, by blocking a part of a virus that is essential for its invasion). The immune system can distinguish between millions of different antigens thanks to the equally diverse antigen-binding regions at both tips of the antibody. However, the leftover antibody is frequently stable. The only types that specify the antibody's class or isotype are IgA, IgD, IgE, IgG, and IgM. The constant region at the antibody's trunk contains sites that are involved in interactions with several immune system components.
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What happens during Mr. Whymper's visit to Animal Farm?
Every Monday, Mr. Whymper starts making a visit to the farm, and Napoleon gives him orders for various goods. The pigs start residing in the farmhouse, allegedly breaking one of the Ten Commandments by sleeping on beds.
Mr. Whymper, a Willingdon-based lawyer, had volunteered to serve as Animal Farm's point of contact with the outside world and would come to the farm each Monday morning to pick up instructions.
The animals are trained to loudly lie about ration increases whenever Mr. Whymper pays a visit, and the empty food barrels are made to look full. Whymper serves as "a middleman between the outer world and Animal Farm."
He continuously makes an appearance in the supporting role to relay signals from Napoleon to the other humans. He is the first human the pigs allow contact with after the Rebellion.
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select the characteristics researchers suspected the genetic material would have prior to the discovery that the genetic material was dna.
a. accurate replication
b. uses a triplet code
c. ability to store information
d. passes from one generation to the next
e. comprised of nucleotides
The characteristics researchers suspected the genetic material would have prior to the discovery that the genetic material was DNA are:
ability to store information
accurate replication
passes from one generation to the next
The information that determines every protein that makes up an organism, including details about when, which cells each protein should be formed in, and how much of each protein should be produced, is carried by genes, which serve as DNA's most crucial role. We examine how genes are typically organized on each chromosome in this section. Eucaryotes have chromosomes that make up their genomes. We also explain the specific DNA sequences that enable correct chromosome duplication and transmission from one generation to the next.We also face the significant problem of DNA packing. If the DNA in each human cell were stretched end to end, it would measure about 2 meters.
However, the nucleus, which houses the DNA, is only about 6 micrometers in diameter. This is mathematically equal to stuffing a tennis ball with 40 kilometres (24 miles) of incredibly tiny thread! Specialized proteins that attach to and fold DNA carry out the challenging work of packaging DNA, creating a succession of coils and loops that provide progressively higher levels of structure and prevent the DNA from becoming an unmanageable tangle.
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How long ago was the primary evidence of photosynthesis?
3 BC is when photosynthesis started
name 3 shared targets of the sympathetic and parasympathetic system. what are the effects each system has on the target?
The sympathetic and parasympathetic neural systems, which both regulate the same bodily regions and general bodily activities but have opposing effects, are found in the autonomic nervous system.
The modulation of numerous essential processes, including as respiration and heart contraction, depends on the sympathetic and parasympathetic neural systems. For instance, the parasympathetic and sympathetic nervous systems work together to maintain healthy blood pressure, vagal tone, and heart rate. The lungs, heart, smooth muscle, and exocrine and endocrine glands, including the sweat and salivary glands, are among the major organs impacted. Together, the two systems maintain your body balanced. Blood pressure increases, the fight-or-flight response, pupil dilation, and stimulation of the adrenal medulla are all caused by the sympathetic nervous system.
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in their somatic cells, mice have 40 chromosomes. how many chromosomes did the mic inherit from each parent? how many chromosomes would each daughter cell have after mitosis?
When a somatic cells of mice with 40 chromosomes undergoes meiosis, the the chromosomes inherited from each parents are 4 in numbers.
In a positive organism 2n=forty. Sperm cells may have n=20 chromosomes. The organism has forty chromosomes withinside the diploid cells of their body. Since the male gamete sperm is produced with the assist of meiosis, consequently the chromosome wide variety withinside the gamete is decreased to 1/2 of withinside the gametes.
20 chromosomes , due to the fact in merosis mobileular dicison chromosome wide variety will become halved.All somatic (body) cells (gametes [sperm and egg] aren't known as somatic cells) have forty six chromosomes (forty withinside the mouse), 1/2 of of which got here from the daddy and 1/2 of from the mother.
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how many of the following can be used to distinguish a nematode worm from an annelid worm? 1. type of body cavity 2. presence of segmentation 3. number of embryonic tissue layers 4. shape of worm in cross-sectional view
The points differentiating a nematode from an annelid are: (1.) type of body cavity; (2.) presence of segmentation; (4.) shape of worm in cross-sectional view.
Body cavity is the space inside a living body that is filled with fluids and holds the organs of the body. It is also denoted as coelom. The coelom is lined by the mesodermal cells. The animals can be differentiated into three types based on body cavity: acoelomates, pseudocoelomates and coelomates.
Segmentation is the repetitive division of the body into small sections. These are also referred to as metameric segments. They are mesodermal in origin.
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helpppp giving brainly
The chromosomes in the vegetative, reproductive, and or the zygote or embryo cells of the illustrated animals would be as below.
Diploid and haploid cellsDiploid cells are mostly vegetative cells with double chromosome sets (2n). Haploid cells, on the other hand, are gametes or reproductive cells with just a set of chromosomes (n).
During fertilization, male and female gametes fuse together to form diploid zygotes or embryo cells (2n).
Thus:
A corn with 10 chromosome pair will have: 10 x 2 = 20 chromosomesThe number of chromosomes in the pollen and ovum of the corn would be 10 chromosomes each.The seeds, being a product of fertilization will have 2n=20 chromosomes.Also:
Bullfrogs with 26 somatic chromosomes (2n) will have 13 chromosomes in the reproductive cells and 26 chromosomes in the zygotes and embryo cells.Mouse with 20 chromosomes in the gamete cells will have 40 chromosomes in the somatic cells and 40 chromosomes in the zygote and embryo cells.Pigeons with 80 chromosomes in the zygotes and embryo cells will have 80 chromosomes in the somatic cells and 40 chromosomes in the gamete cells.Rabbits with 44 somatic chromosomes will have 22 chromosomes in their gamete cells and 44 chromosomes in their zygotes and embryo cells.More on ploidy levels of organisms can be found here: https://brainly.com/question/11157430
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which bone cells are responsible for laying down new bone for growth and repair?
Osteoblasts are cells responsible for laying down the new bone for growth and repair.
What type of bone cells turn into the new bone?Bones comprise of two types of cells that control bone growth: osteoblasts and osteoclasts. Osteoblasts lay down tendons and other important organic materials that are required to synthesize bone tissue, whereas osteoclasts reabsorb live bone tissue.
Bone tissue is continuously overhauled through the concerted actions of bone cells, which involve bone resorption by osteoclasts and bone formation.
So we can conclude that The osteoblast, osteoclast, osteocyte, and osteoprogenitor bone cells are in control of the growth, shaping, and maintenance of bones.
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