Answer:
whats the question ?? keep it
The shape of the lens of the eye is controlled by the _____.(a) pupillary constrictor muscles(b) pupillary dilator muscles(c) ciliary muscles(d) iris(e) All of the above.
The ciliary muscles are in charge of shaping the eye's lens.These ciliary muscles are very important for eyes.
Our eyes lenses must adapt in shape to allow us to focus on objects at various distances.While, the circular ciliary body is moreover an outgrowth of the iris, On the other hand, a colourful portion is often known as eye fluid, is created by the ciliary body. Moreover, it houses the ciliary muscle, which modifies the lens' shape when your eyes focus on a close object.The ciliary body, which is located between the anterior border of the choroid and the eye, is mostly made up of the ciliary muscle. It is made up of smooth muscle fibres that are aligned longitudinally, radially,
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imagine a population that is polymorphic at the a locus. if the frequency of the a allele is 80% and the frequency of the a allele is 20%, what proportion of the population would you expect be heterozygotes?
You would estimate that 0.0016 of something like the population would be heterozygotes. if the frequency of one allele is 20% and indeed the frequency of another is 80%.
What is an example of an allele?An allele is a component of a group of genes that govern the same feature, such as red cells or color blindness, and are located at a specific place on a specific chromosome. The alleles you received from your parent define your blood group.
Why is there two alleles in humans?Diploid humans exist. As a result, everyone of our genes has just two alleles. This is mostly due to the fact that we only receive one copy of each parent's chromosomes. We all have pairs of chromosomes because we each have two parents.
AA × AA = 0.4096
AA × Aa = 0.4096
AA × aa = 0.0512
Aa × Aa = 0.1024
Aa × aa = 0.0256
aa × aa = 0.0016
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b. an unknown organism is found in the forest and the gene is sequenced as follows: unknown: c c a t g g a a t c g a using the table above, what kind of an animal do you think this is?
Answer: I believe its something close to a pig
Explanation:The DNA sequence is closest to the pig . The amino acids Gly, Thr, Leu, and Ala are from the "unknown animal." On the worksheet, the pigs amino acids are Gly, Thr, Phe, and Ala. There is only one different amino acid between the two.
I might be wrong but there u go
5. The map below shows the typical breeding ranges for six different populations of juncos. The UCSD juncos population is not shown on this map. If you wanted to look for evidence of whether juncos from one of these six populations ever interbred with juncos from one of the other of the six populations, in what parts of the map do you think you would be more likely to observe such behavior? Mark those locations on the map with small stars.
HEEELPPP ASAAPPP
Juncos interbred in the forest of northern rocky mountains and from southern Alberta to eastern Idaho.
What are Juncos?A species of junco, or small, greyish New World sparrows, includes the dark-eyed junco.
A large portion of temperate North America is home to this bird, which is also widespread in the Arctic throughout the summer. Similar to the closely related fox sparrow, it is a very variable species, and its systematics are still not fully understood.
Juncos interbred in the forest of northern rocky mountains and from southern Alberta to eastern Idaho.
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how does the classical complement pathway shown in the video differ from the alternative complement pathway?
The alternative complement route can be triggered by C3 hydrolysis, foreign particles, infections, or injured cells, but the conventional complement pathway normally requires antigen—antibody complex (immune complexes) to activation (specific immune response).
Complementary receptor 1 (CR1) on CD35: lectin-based, conventional, and alternative pathways. The transmembrane glycoprotein CD35 works as a co-factor to factor I in the breakdown of C3b and C4b and promotes the decay of C3/C5 step down transformer in both the conventional and alternative pathways. A chain of events that activates the lectin, alternative, and classical pathways results in the membrane assault complex. The immune system includes them. For pathway start, each has its own set of proteins. One of three complements routes that opsonize and eliminate infections is the alternative pathway.
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the lipopolysaccharide molecule is an important component of the cell membranes of which organisms?
The lipopolysaccharide (LPS) molecule is an important component of the cell membranes of gram-negative bacteria.
Gram-negative bacteria are a diverse group of bacteria that are characterized by their cell walls, which consist of a thin layer of peptidoglycan surrounded by a thicker outer membrane. The outer membrane contains a variety of lipids and proteins, including the LPS molecule.
LPS is a large, complex molecule that is composed of three parts: a lipid, a polysaccharide, and a protein. The lipid component, known as lipid A, is responsible for the toxic effects of LPS, while the polysaccharide and protein components are involved in the recognition and specificity of LPS by the host.
The presence of LPS in the cell membrane of gram-negative bacteria makes them highly resistant to certain types of antibiotics and other antimicrobial agents. LPS also plays a role in the pathogenesis of many gram-negative bacterial infections, as it triggers an immune response that contributes to the symptoms of the infection. For these reasons, LPS is an important target for the development of new antibiotics and other treatments for gram-negative bacterial infections.
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Cartilage has a flexible matrix that can accommodate mitosis of chondrocytes – this makes it an excellent scaffolding tissue upon which to build bone.
True/false
The adaptable matrix of cartilage acts as an excellent scaffold for the formation of bone because chondrocytes can go through mitosis there. The given statement is true.
FlexibilityThe three types of cartilage are hyaline, elastic, and fibroblastic. Elastic cartilage is the type of cartilage that makes up the majority of the human body.The three types of cartilage are chondrocyte cartilage, chondrocyte cartilage, and hyaline cartilage. Due to the tightly packed collagen fibers in the matrix, it is strong but slightly flexible.The matrix of cartilage does not contain calcium like bone does. It actually has high concentrations of chondroitin, a chemical that contributes to suppleness and flexibility.For more information on cartilage kindly visit to
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The primers play three roles in a PCR reaction. Select all of the answers that are correct. They denature the double-stranded DNA They serve as the templates onto which the new complementary strands are made. They determine what region of the genome will get amplified. They determine the size of the resulting PCR product. They provide a double-stranded region for Taq to initiate synthesis They are the monomers that are polymerized by Taq to make the new complementary strands
Primers serve three purposes in the PCR reaction. The second, fourth, and fifth choices are appropriate in this case since they show the three functions that primers perform in a PCR reaction.
It is known that primers are brief RNA or DNA strands (typically 18–24 nucleotide bases long). They are not monomers, at all. The synthesis of primers is carried out by primase rather than taq polymerase. The first option is incorrect.
Since the size of the PCR products generated in a reaction heavily depends on the primer design, the second option is the best.
The third approach is incorrect since primer does not serve as a temple and taq polymerase does not initiate synthesis from primer. A DNA strand serves as the template in a PCR process. Because primer offers free -3'OH, which taq polymerase uses to start synthesis.
The fourth option is the best one. Without primer, Taq polymerase cannot start adding nucleotides. The target chromosomal area that will be amplified by the PCR reaction can be specified by the primer, which makes the fifth option accurate.
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When factors are in a range in
which an organism CANNOT
survive, which zone is
represented?
A. intolerance
B. sub-optimal growth
C. optimal growth
D. optimal tolerance
(a) intolerance is When factors are in a range in which an organism CANNOT survive,
what is an organism?Any living system that performs as a distinct unit is referred to as an organism in biology. All living things are made up of cells. The idea of an organism is founded on the notion of a basic living entity. or A living creature that has an organized structure, is capable of responding to stimuli, can reproduce, develop, adapt, and preserve homeostasis is referred to as an organism. Therefore, every animal, plant, fungus, protist, bacterium, or archaeon found on Earth would be considered an organism. There are numerous methods to categorize these species. Counting the number of cells that make it up is one method. The single-celled (such as bacteria, archaea, and protists) and multicellular organisms are the two main categories (animals and plants). Biological entities can also be categorized based on their subcellular architecture.
what is intolerance?Intolerance or hypersensitivity, unfavorable immune system responses.
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timothy weighs exactly 100 points. after swimming at the beach all day, will his weight increase, decrease, or stay the same? why?
Answer:
Im 80 decrease 20 increase
Explanation:
i would think he would d3crease some w31ght off by sw1mm1ng so i think its d3creases
What is the correct order of the exocytosis or secretion pathway?
A. rough ER, endosome, Golgi, smooth ER
B. rough ER, Golgi, smooth ER, plasma membrane
C. smooth ER, rough ER, exocytosis, Golgi
D. rough ER, Golgi, transport vesicle, plasma membrane
E. rough ER, Golgi, endosome, plasma membrane, transport vesicle
The correct order of the exocytosis or secretion pathway is option D
D. rough ER, Golgi, transport vesicle, plasma membrane.
The entry of proteins into the ER serves as a key junction point for protein flow within eukaryotic cells. The ER is the initial target for proteins that are intended for secretion or integration into the Golgi apparatus, lysosomes, or plasma membrane. Most proteins in mammalian cells are translated on membrane-bound ribosomes before being moved into the ER. Proteins that will remain in the cytosol or that will be incorporated into the nucleus, mitochondria, chloroplasts, or peroxisomes, on the other hand, are made on free ribosomes and released into the cytosol after their translation is finished.
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What is process by which 2 species evolve in response to changes in each other?
Coevolution, the process of mutual evolutionary change that occurs when pairs of species or groups of species evolve in response to changes in each other.
What is the concept of coevolution?Coevolution is most broadly interpreted as two groups of organisms interacting and influencing the evolution of other organisms. Groupings can be created at various levels of biological organization and co-evolution of the groups under study (eg, intra- or inter-species, intra- or inter-generic, intra- or inter-guild).
What are the three types of coevolution?Several different categories of coevolution are often debated by scientists in ecology and evolutionary biology: Pairwise coevolution, diffusion coevolution, and gene-by-gene coevolution.
What Causes Coevolution?Interactions co-evolve as an ever-changing geographic mosaic; Much of evolution is coevolution, the coevolution of parasites and hosts, predators and prey, competitors and mutualists. Interacting species impose choices on each other, constantly changing the traits and life histories of other species
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Plants can reproduce both sexually and asexually. Asexual reproduction does not require the investment required to produce a
flower, attract pollinators, or find a means of seed dispersal. Asexual reproduction produces plants that are genetically identical to
the parent plant because all of the genetic material comes from one parent. Traditionally, these plants survive well under stable
environmental conditions when compared with plants produced from sexual reproduction because they carry genes identical to those
of their parents. What are some examples of asexual reproduction in plants? Select ALL that apply.
A)
Tomatoes produce flowers which grow into fruits.
B)
Irises grow from bulbs.
C)
Potatoes have nodes or eyes from which the new growth begins.
D
Zinnias are grown from seeds.
E)
Strawberries produce runners.
l
Examples of asexual reproduction in plants include B. Irises grow from bulbs, C. Potatoes have nodes or eyes from which the new growth begins And E. Strawberries produce runners.
What is asexual reproduction?Asexual is a type of reproduction in plants that does not involve flowers and seeds in the process. So there are other ways to produce new offspring without the marriage process.
Examples of asexual reproduction in problems include:
1. Plants from tubers
Tubers are an example of a place to store food reserves for plants and can act as a means of reproduction. When the tuber is separated from the plant, the tuber can grow new shoots and form a complete plant. Examples are irises and potatoes which grow from tubers.2. Strawberries produce runners.
Runners are often called stolons. Stolons are stems that grow horizontally and in each segment are able to form a whole new plant. Stolons are found in strawberries and grasses such as sedges.Learn more about examples of asexual reproduction at https://brainly.com/question/16213920
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Answer:
B, C, and E
Explanation:
usa testpreppp
What is significant about areas in the DNA that contain repeated segments? A) They are termed SNPs. B) They are the basis for DNA fingerprinting. C) They are the same from person to person. D) They cannot be mapped. E) They disprove the belief that there are variations of the human genome
The correct option is B ; They are the basis for DNA fingerprinting. While certain repeating DNA sequences are necessary for cellular function and genome preservation, others can be detrimental.
Numerous repetitive DNA sequences have been connected to human disorders including Huntington's and Friedreich's ataxia. An unknown person's remains can be identified via DNA fingerprinting. refers to phenotypic variation within a species that is spatially patterned.
Acclimatization to high altitude happens during growth and development in high-altitude indigenous . The evolutionary history of the species H.
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What is the name of the 5 carbon sugar in RNA?
RNA (ribonucleic acid) contains the five-carbon sugar ribose, also known as D-ribose, which alternates with phosphate groups to create the "backbone" of the RNA polymer.
What is RNA?A polymeric molecule called ribonucleic acid (RNA) is crucial for many biological processes, including the coding, decoding, control, and expression of genes. RNA and deoxyribonucleic acid are examples of nucleic acids (DNA). Along with lipids, proteins, and carbohydrates, nucleic acids are one of the four fundamental macromolecules needed for all recognised forms of life. Unlike DNA, which is a paired double strand, RNA is a single strand that is folded over on itself in nature. Like DNA, RNA is made up of a series of nucleotides. Using the nitrogenous bases guanine, uracil, adenine, and cytosine, represented by the letters G, U, A, and C, messenger RNA (mRNA) is used by cellular organisms to transmit genetic information that instructs the creation of particular proteins. Many viruses employ RNA to encrypt their genetic information.
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What is reinforcement in behavior?
Reinforcement in behavior refers to a process that increases the likelihood of a behavior being repeated in the future.
Reinforcement is a key concept in the field of behaviorism and is used to modify behavior in animals and humans. Reinforcement can be positive, where a desirable stimulus is added after a behavior is performed, or negative, where an aversive stimulus is removed after a behavior is performed. The goal of reinforcement is to increase the frequency of a desired behavior and decrease the frequency of an undesired behavior. For example, a teacher may reinforce a student's good behavior by giving them a sticker, while taking away a toy may reinforce a child's behavior of sharing. The concept of reinforcement has been widely applied in fields such as psychology, education, and animal training, and is a crucial component in shaping and maintaining behavior.
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The ultimate source of energy for most organisms is
Oglucose
O carbon dioxide
O oxygen
the sun
Answer:
c
Explanation:
this substance is produced in the liver, but is stored in and secreted by the gallbladder. t/f
It is TRUE that bile is produced in the liver, but is stored in and secreted by the gallbladder.
The liver produces bile, also known as gall, which is a greenish yellow secretion that is then sent to the gallbladder for concentration, storage, or transportation into the duodenum, the first part of the small intestine. Its job is to facilitate the duodenum's ability to digest lipids. Bile is made up of bile acids and salts, phospholipids, cholesterol, pigments, water, and electrolyte molecules that make the overall solution slightly alkaline. Bile is continuously released from the liver cells into the common bile duct and gallbladder, where it is normally concentrated to 5–18 times its original intensity.
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The actual question is:
True, or False,
Bile is produced in the liver, but is stored in and secreted by the gallbladder.
What are the possible chromosome combinations in the two daughter cells? (Use DG, LG, DP, and LP. )
The combinations will depend on the specific cell division process and the chromosome makeup of the parent cell.
What are chromosomes?Chromosomes are structures within cells that contain genetic information in the form of DNA.
The possible chromosome combinations in the two daughter cells can vary depending on the type of cell division.
In mitosis, each daughter cell receives an identical set of chromosomes, so the chromosome combination is the same in both cells, represented as DG (duplicated genome). In meiosis, daughter cells receive a unique combination of chromosomes due to the process of recombination, resulting in either LG (haploid genome) or DP (duplicated haploid genome) in one daughter cell and LP (haploid genome) or DP (duplicated haploid genome) in the other daughter cell.
Daughter cells are the two identical cells that result from the division of a single cell during cell division.
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as dehydration progresses and blood volume decreases, blood pressure will and heart rate will . a. increase; increase b. remain the same; decrease c. decrease; decrease d. decrease; increase
The volume of blood in your body, or the amount of blood flowing through it, reduces when you are dehydrated. In order to make up for this, your heart beats more quickly, raising both your blood pressure and heart rate.
Age, genetics (family history and race), atherosclerosis, obesity, salt intake, and alcohol consumption are risk factors. A poor intake of potassium, calcium, and magnesium-rich low-fat milk products, whole grains, nuts, fruits, and vegetables may also raise the risk of developing hypertension. The calcium mineral implanted into the organic matrix of bone contributes to the stiffness and strength of bone and is a storage of calcium that can be withdrawn to keep the circulation calcium levels within the typical range of about 2.5 mM. (10 mg per dl).Blood pressure may drop when dehydration worsens due to a reduction in blood's water content. Increased levels of dehydration affect cardiovascular function along with an increase in heart rate and challenges managing the amount of blood the heart pumps to the tissues.
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a tissue that is dominated by thick collagen fibers that extend mostly parallel, allowing little space for cells and ground substance, is known as
A tissue that is dominated by thick collagen fibers that extend mostly parallel, allowing little space for cells and ground substance, is known as Connective tissue.
The body's cells are supported and integrated by connective tissue, which is made up of organic tissues that are divided into their cells and extracellular components. The latter is known as the ground material and is integrated with the fibers that give connective tissue its elastic properties.
Connective tissue, also referred to as fibrous tissue, is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nerve tissue. It arises from the mesenchyme, which originates from the mesoderm, an intermediate embryonic germ layer. Connective tissue fills in the spaces between various tissues all over the body, including the nervous system. The three meninges, which are membranes that cover the brain and spinal cord, are made of connective tissue.
Mammal bodies have a form of tissue called connective tissue, which is utilized to unite or connect all the other tissues.
Several varieties of connective tissues are:
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if robert suffers from a dysfunction in a(n) ______, he would know the relevant structure was in the central nervous system.
If Robert suffers from a dysfunction in a(n) structure, he would know the relevant estructura was in the central nervous system.
This is because the central nervous system is responsible for controlling and coordinating the body's functions and movements, and a dysfunction in a structure within this system can result in a variety of symptoms, including loss of movement or sensation, changes in behavior, and difficulty with cognitive functions.
It is important to identify the specific structure that is affected in order to develop an appropriate treatment plan and address the underlying cause of the dysfunction.
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Which characteristic was not necessary in order for plants to colonize land?A. Vascular tissue for moving water throughout the plantB. a waxy cuticle to reduce water lossC. the ability to screen ultraviolet lightD. the development of thick spore walls to protect the spore from dehydrationE. development of embryos protected
A. Vascular tissues for moving water throughout the plant. The vascular tissues of these plants allow them to have true roots, stems, and leaves.
The few large plants that were present before the development of vascular tissues did so in watery environments, where support and water conduction were not necessary. Another notable difference between bryophytes and vascular plants is the sporophytic phase of the life cycle, which is the larger, more pronounced reproduction among vascular plants.
Tracheophytes, or vascular plants, are different from nonvascular bryophytes in that they contain specialised xylem and phloem tissues for holding and carrying food and water, respectively. A central column (stele) that runs through the center of the plant is made up of vascular tissue, including xylem and phloem.
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With respect to ABO and Rh blood groups, there are __________ different blood types.
With respect to ABO and Rh blood groups, there are 8 different blood types. the eight blood types are: A+, A-, B+, B-, AB+, AB-, O+, and O-.
The ABO blood group system is based on the presence or absence of two antigens (A and B) on the surface of red blood cells, as well as the presence or absence of antibodies against these antigens in the plasma. There are four main blood types in the ABO system: type A, type B, type AB, and type O.
The Rh blood group system is based on the presence or absence of another antigen (Rh factor) on the surface of red blood cells. Individuals who have the Rh antigen are considered Rh positive (Rh+), while those who do not are considered Rh negative (Rh-).
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during the staationary phase of the bacteriaal growth curve, bacteria may resond to the environmental stress by
The stationary phase of bacterial growth is a period of time during which the bacterial population stops increasing in size and number due to all the given options thus, option (E) is the correct answer.
The stationary phase comes after the exponential or log growth phase of fast population expansion. The number of bacteria that are born and those that are decline are equal during the stationary phase. This is brought on by a deficiency in nutrients as well as other environmental conditions like pH, temperature, and oxygen levels.
In order to survive and adapt to their environment, bacteria may start to create spores during the stationary phase. The population starts to decline during the decline phase after the static phase. Understanding the various stages of bacterial proliferation is essential for developing management and prevention methods for bacterial illnesses as well as for understanding how bacterial populations behave.
The complete question is:
During the stationary phase of the bacterial growth curve, bacteria may respond to environmental stress by______________
(A). producing highly resistant endospores.
(B). growing flagella.
(C). becoming competent,
(D). capable of taking up pieces of DNA
(E). all of these choices
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in mice, the gene (C) for colored fur is dominant over its allele (c) for white. The gene (N) for normal behavior is dominant over ()n for waltzing. Pairs of mice were mated, and the following results obtained. In each case, give the probable genotypes of the parents:
a) colored normal mated with white normal produced 29 colored normal, and 10 colored waltzers.
b) colored normal mated with colored normal produced 38 colored normal, 15 colored waltzers, 11 white normal, and 4 white waltzers
c) colored normal mated with white waltzer produced 8 colored normal, 7 colored waltzers, 9 white normal, and 6 white waltzers
The probable genotypes of parents include:
a) CcNn and ccNn
b) CcNn and CcNn
c) CcNn and ccnn
How to determine probable genes?a) The probable genotypes of the parents in this case would be CcNn and ccNn, where C represents the dominant allele for colored fur, N represents the dominant allele for normal behavior, c represents the recessive allele for white fur, and n represents the recessive allele for waltzing behavior.
b) The probable genotypes of the parents in this case would be CcNn and CcNn, where C represents the dominant allele for colored fur, N represents the dominant allele for normal behavior, c represents the recessive allele for white fur, and n represents the recessive allele for waltzing behavior.
c) The probable genotypes of the parents in this case would be CcNn and ccnn, where C represents the dominant allele for colored fur, N represents the dominant allele for normal behavior, c represents the recessive allele for white fur, and n represents the recessive allele for waltzing behavior.
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5.a parasite that draws blood, irritates the skin, and causes restlessness is most likely a/an a.ectoparasite b.endoparasite c.helminth d.vector
Ectoparasite: A parasite that disturbs sleep, irritates the skin, and draws blood.
Humans are susceptible to three main forms of parasites: protozoa, helminths, and ectoparasites. Ectoparasites such as lice, sheep ticks, ticks, fleas, and mange mites have been linked to a variety of health issues, including mechanical tissue damage, irritation, inflammation, hypersensitivity, abscesses, weight loss, lameness, anaemia, and in some extreme cases, the death of infected animals with the resulting... Ectoparasites are organisms that can cause harm to the host because they can survive in the skin or skin-related growths of the host for a variety of periods of time. Examples of typical human ectoparasites include lice, fleas, bedbugs, mites, and ticks. The most prevalent foodborne parasites in the United States are roundworms like Trichinella spp. and Anisakis spp., protozoa like Giardia intestinalis, Cyclospora cayetanensis, and Toxoplasma gondii, and tapeworms like Diphyllobothrium spp. and Taenia spp.
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a woman with type ab blood marries a man with type o blood. what abo blood types would be possible for any children they might have? are there any blood types that would not be possible, and if so, what are they?
You would anticipate that the children of an AB blood type male and an O blood type lady will have type A or B blood. This is due to the fact that the woman would not contribute any because she is an O blood type, while the man could only provide an A or a B (but not both).
The classification of blood-based on the presence or absence of antibodies and inherited antigenic compounds on the surface of red blood cells is known as a blood type, or blood group (RBCs). Depending on the blood group system, these antigens may be proteins, carbohydrates, glycoproteins, or glycolipids. These antigens are present on the surfaces of numerous other cell types found in diverse organs. One allele can give rise to many red blood cell surface antigens that make up a blood group system (or different gene).
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kent cycle at a speed of 20km/h how long does it takes for him to cyclew 120 km
Answer:
6 Hours
Explanation:
120/20 = 6
As the speed is given in km/h the answer is 6 Hours
which vessels increase peripheral resistance when they vasoconstrict in response to epinephrine and norepinephrine?
Systemic arterioles increase peripheral resistance when they vasoconstriction in response to epinephrine and norepinephrine.
Arterioles are small blood vessels that regulate blood flow and blood pressure by controlling the amount of blood that flows into the capillary beds of the body's tissues. When the smooth muscle in the walls of systemic arterioles constricts, the vessel diameter decreases, leading to an increase in resistance to blood flow and an increase in blood pressure. This vasoconstriction is mediated by the sympathetic nervous system, which releases norepinephrine and epinephrine (adrenaline) in response to stress or other stimuli.
Option B is the proper response, thus.
The complete question is:-
Which vessels increase peripheral resistance when they vasoconstriction in response to epinephrine and norepinephrine?
A)venules
B)systemic arterioles
C)capillaries
D)muscular arteries
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