carbon dioxide leaves the body through their respiratory system (lungs)
Carbon dioxide produced from cellular respiration is transported in the blood back to the lungs in three ways: as dissolved carbon dioxide, as bicarbonate, or bound to hemoglobin. Upon reaching the lungs, bicarbonate is converted back into carbon dioxide and water to be exhaled from the body. The circulatory system plays a key role in picking up oxygen for cellular use and removing carbon dioxide.
Explanation:Carbon dioxide from the cells is delivered from the circulatory system back to the respiratory system so it can exit the body. This process is mediated by circulation and mainly involves the red blood cells and the lungs. Carbon dioxide is a by-product of cellular respiration and in large amounts, it changes back into a gas form in the lungs that is expelled from the body during exhalation.
Carbon dioxide can be transported in the blood in three ways: as dissolved carbon dioxide, as bicarbonate, or bound to hemoglobin to form carbaminohemoglobin. These mechanisms are influenced by levels of oxygen in the blood and the saturation of hemoglobin. The majority of carbon dioxide is transported as bicarbonate, which is formed when carbon dioxide combines with water through the help of an enzyme called carbonic anhydrase. This process produces a substance called carbonic acid that spontaneously falls apart into bicarbonate and hydrogen ions.
As bicarbonate increases in erythrocytes (red blood cells), it's shifted into the plasma via a mechanism known as the chloride shift. Once the blood reaches the pulmonary capillaries in the lungs, bicarbonate is turned back into carbon dioxide and water which is then diffused out of the erythrocytes and exhaled from the lungs. As a result, circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.
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According to the rivet model of community structure, A) species share a community because of similar abiotic requirements. B) communities generally lack sharp geographic boundaries. C) if a species disappears from the community, its role will be assumed by another species. D) all species in a natural community contribute to the community's integrity. E) dependence on a particular type of soil rivets plant species into a tightly networked community.
D) all species in a natural community contribute to the community's integrity.
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Identify the correct sentence. A. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, HMS Beagle. B. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, HMS Beagle. C. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, open double quoteHMS Beagle.close double quote D. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, 'HMS Beagle.'
Final answer:
The correct sentence is 'A. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, HMS Beagle,' because it has correct punctuation and properly italicized ship name.
Explanation:
Identify the correct sentence among the given options: The correct sentence is 'A. As a young naturalist, Charles Darwin traveled around the world and made many discoveries on a small British navy ship, HMS Beagle.' This sentence is punctuated correctly and maintains proper use of capitalization and italics for the name of the ship. Options B and C repeat A, and thus are also correct. Option D incorrectly uses single quotes around the ship name instead of italics, which is the established convention for naming ships.
Let’s brush up on mapping. For questions 1-8, pure-breeding P0 animals were mated to generate F1 animals heterozygous at the B and W genes. The heterozygous F1 animals were test-crossed and yielded progeny with the phenotypes below. Mutations in the B gene (b) cause a “no bristles” phenotype. Mutations in the W gene (w) cause a “no wings” phenotype. Both genes are haplosufficient. 45% normal bristles, normal wings 45% no bristles, no wings 5% no bristles, normal wings 5% normal bristles, no wings The numbers above suggest that the B and W genes are linked. What ratio of progeny would you have expected to see if B and W were on different chromosomes?
Answer:
When DNA is duplicated during mitosis, _____.
one completely new DNA molecule is formed
two completely new DNA molecules are formed
two molecules are formed, each with one original side
the original molecule thickens and separates into two
Explanation:
The sum total of an organism's interaction with the biotic and abiotic resources of its environment is called its A) habitat. B) logistic growth. C) biotic potential. D) microclimax. E) ecological niche.
Final answer:
A habitat is the physical location of an organism, while a niche encompasses the organism's function within a community and its interaction with abiotic factors of the environment.
Explanation:
A habitat is the specific, physical location of an organism. Habitats can be identified at different spatial scales. A niche is the function or occupation, of a life-form within a community. An organism's niche incorporates the physical (habitat), chemical, and biological factors that maintains the health and vitality of the organism. An organism's interaction with the abiotic factors of its environment (heat and moisture) defines its niche.
Identify the order of the events and layers in this cross section image, (1) is the oldest, (9) is the youngest.
The order of the events and layers from oldest to the youngest.
Layer G Layer FLayer E Layer DIntrusion A Layer C Layer B Fault H Erosion SurfaceWhat is each layer about?
Layer G: This is the lowest layer and therefore is considered the oldest in the sequence.
Layer F: This layer lies directly above G, so it must have been deposited next.
Layer E: Similarly, layer E is above F and therefore is next in the sequence.
Layer D: This layer caps E and is therefore next.
Intrusion A: The intrusion cuts across layers G, F, E, and D, so it must be younger than all of these layers.
Layer C: Above layer D and unaffected by the intrusion, so it must have come after.
Layer B: This is the layer on top of C and thus is next.
Fault H: The fault cuts through all layers and the intrusion, so it is younger than all of these features.
Erosion Surface (at the top, represented by the wavy line along the top of layer B): This surface is the youngest feature, cutting across all layers.
Complete question:
Identify the order of the events and layers in this cross section image, (1) is the oldest, (9) is the youngest.
When individuals of the same species are reproductively isolated, genetic differences may accumulate in sufficient number so that new species could emerge. Such an event would be an example of:
a. microevolution.
b. founder effect.
c. equilibrium.
d. macroevolution.
Answer:
b. founder effect
Explanation:
When there is a situation when sufficient number of members of one species are reproductively isolated, and if there is an evolutionary pressure for them to start developing new advantageous traits, then a new species will gradually emerge. In this kind of scenario the genetic diversity will be minimized, as the number of individuals is much smaller, and that will result in only changes that will go in only one direction and they will also occur quicker than if there was a greater genetic diversity. This is called the founder effect, and it is easy to see why this term has been chosen, as the limited number of members of a species that have been reproductively isolated are giving the foundation for the development of a new, separate species.
In humans, the ABO blood type is under the control of autosomal multiple alleles.Color blindness is a recessive X-linked trait.Mom is type A and has normal color vision.Dad is type A and has normal vision.They have a son who is type O and is color-blind.What is the probability that their next child will be a daughter who is type O and has normal color vision?Enter your answer as a fraction (for example: 1/5).
Answer: 1/4
Explanation:
Firstly, in order for both parents to be type A and have children with type o blood, their blood types must both be Ao. Since o is a recessive blood type, a punnett square shows there is a 25% chance any child of theirs will have type o blood. If neither parent is color blind and they have a son who is, it implies that the mother is a carrier of colorblindness and has the genotype XᴮXᵇ. If you do a punnett square of the not colorblind father (XᴮY) and the mother, it shows that a daughter would have a 0% chance of being colorblind. Therefore colorblindess is irrelevent, since there is no possibility of the daughter not having normal color vision. In conclusion, there's a 25% chance she will have type o blood and not be colorblind, since the other 75% chance would be having type A blood and not being colorblind.
Which of the following types of mutations is MOST likely to alter the encoded protein?A single nucleotide deletionA point mutation in the 2nd base of a codonA point mutation in the 1st base of a codonA point mutation in the 3rd base of a codon
Answer:
A point mutation in the 1st base of a codon
Explanation:
A point mutations are mutations of one base in the DNA sequence. The effects of point mutations might be harmful, beneficial or neutral.
Deletion mutations are frameshift mutation, because they change the reading frame and thus affect the sequence of amino acids produced. Usually, protein changes its structure and function and become useless.
Point mutations at 2nd base of codon are misssense mutations, meaning that the new amino acid is produced, but it can be amino acid with similar properties. That will not affect the function of the protein a lot.
3rd base of a codon are often silent mutations, which means that the sam amino acid is produced (multiple codons can code for the same amino acid).
A toxin that blocks the release of a neurotransmitter would most likely:
No answer text provided.
prevent action potentials in the pre-synaptic cell
block oxygen from entering the cell
effect the post-synaptic cell
stop action potentials by blocking Na channels
Answer:
the answer is the 1st. choice...
Explanation:
because neurotransmitters are the connection between neurotransmitters and the brain 2 tell what action potential should happen, mostly muscle movement...
An earthworm that feeds on the remains of plants and animals is acting as a A) producer. B) primary consumer. C) secondary consumer. D) tertiary consumer. E) detritivore.
In mitosis, when do the sister chromatids align with centrosomes in the cells?
A. Telophase
B. Metaphase
C. Anaphase
D. Interphase
Answer: d. Interphase
Explanation:
During metaphase, the sister chromatids align with centrosomes in the cells in mitosis. So, the correct option is (B).
What is Mitosis?Mitosis is defined as the part of the cell cycle in which the duplicated chromosomes are divided into two new nuclei. This division gives rise to genetically identical cells in which the total number of chromosomes remains the same, hence mitosis is also known as Equational division.
The stages that occur in mitosis are prophase, prometaphase, metaphase, anaphase, and telophase while cytokinesis is the final physical cell division that follows telophase, which is also considered as the sixth stage of mitosis.
During mitosis the duplicated sister chromatids that align properly at the metaphase plate of the mitotic spindle before separating into two daughter cells.
Thus, during metaphase, the sister chromatids align with centrosomes in the cells in mitosis. So, the correct option is (B).
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Choose a trait that goes beyond Mendel’s one trait inheritance. Discuss the inheritance (ex. Incomplete dominance, multiple allele, polygenic, pleiotrophy, linkage, environmental influences), the different phenotypes or anything else that deviates from simple genetics. Mendel got lucky with the traits he chose in his pea plants. If he got more complicated traits and inheritance it would have made his findings almost impossible to come to. Talk about how these traits would have made it hard for scientists like Mendel to figure out inheritance the way he did
Mendel's work mainly studied traits with simple, single trait inheritance patterns. Discoveries post-Mendel's times revealed more complex inheritance patterns that would have made his determinations of inheritance as difficult. Traits showing discontinuous variation, that Mendel worked with, deviate from the prevalent theory of that time that considered traits blend in offspring.
Explanation:Gregor Mendel studied traits where the inheritance was straightforward in pea plants. These traits fell under a single characteristic with dominant and recessive alleles. However, several modes of inheritance that were discovered after Mendel's times deviated from this simple pattern of inheritance. These include incomplete dominance, codominance among others.
If Mendel has encountered traits with complex inheritance patterns, it would have made determining the inheritance as he did, difficult. The simple mono-hybrid crosses, which are matings between two purebred individuals that differ in one characteristic, would not have given predictable results as they did.
Further, Mendel's work went largely unnoticed because, at that time, the scientific community was incorrect in thinking that inheritance worked by blending the traits of parents, producing an intermediate phenotype in the offspring. This was so because many traits show continuous variation, a range of small differences among individuals, making the offspring seem like a 'blend' of their parents' traits. Mendel, however, worked with traits showing discontinuous variation, with the individuals showing either of the two easily distinguishable traits.
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Mendel studied traits in pea plants that were easy to categorize with simple dominant-recessive patterns, making it possible to establish the basic laws of inheritance. Traits involving incomplete dominance, polygenic inheritance, or genetic linkage show more complex inheritance patterns, which would have made Mendel's work much more difficult.
Gregor Mendel discovered Mendelian inheritance by studying traits in pea plants that were controlled by a single gene with two alleles; one dominant and one recessive. This simplistic scenario allowed for straightforward observations of phenotypic patterns across generations. However, there are complex modes of inheritance that go beyond this, such as incomplete dominance, polygenic inheritance, and genetic linkage. In incomplete dominance, a heterozygous individual exhibits a phenotype that is a blend of the two homozygous phenotypes. For example, in the case of flower color, a red-flowered plant (RR) and a white-flowered plant (WW) might produce pink flowers (RW) in their offspring, unlike the clear dominant-recessive relationship observed by Mendel. Polygenic inheritance involves multiple genes contributing to a single trait, resulting in continuous variation of phenotypes, as seen in human traits like height or skin color. This complexity with multiple genes and alleles interacting would have made it challenging for Mendel to discern clear patterns of inheritance. Genetic linkage occurs when genes are located close together on the same chromosome and tend to be inherited together. This violates Mendel's law of independent assortment and would have obscured the inheritance patterns Mendel observed in his pea plants. If Mendel had encountered these complex forms of inheritance, his task of elucidating the principles of inheritance could have been much more challenging, or perhaps even impossible, with the knowledge and tools available during his time.
In the DNA double helix, how are the two strands of DNA held together?
A. Hydrogen bonds between sugar groups and phosphate groups hold the two strands of DNA together.
B. Chemical bonds between base pairs hold the two strands of DNA together.
C. Hydrogen bonds between the base pairs hold the two strands of DNA together.
D. Chemical bonds between sugar groups and phosphate groups hold the two strands of DNA together.
Answer:
The answer is C. Hydrogen bonds between the base pairs hold the two strands of DNA together.
Explanation:
Watson and Crick proposed the double helical model of DNA. This model says that DNA exists as a double helix. It has two polynucleotide strands. Each strand consists of a sequence of nucleotides linked together by phosphodiester bonds. The backbone is formed of sugar and phosphate. The nitrogen bases are projected more or less perpendicular to the sugar phosphate backbone but face inside. The base pairing is specific. The two polynucleotide strands are held together in their helical structure by hydrogen bonding between bases in opposing strands. Adenine and thymine form two hydrogen bonds. Guanine and cytosine form three hydrogen bonds.
The two strands of DNA in the double helix are held together by hydrogen bonds between the nitrogenous base pairs, where adenine pairs with thymine and cytosine with guanine. The sugar-phosphate backbone is on the exterior, bonded by covalent bonds.
Explanation:In the DNA double helix, the two strands of DNA are held together by hydrogen bonds between the nitrogenous bases of the component nucleotides. This specific bonding is referred to as complementary base pairing, where adenine pairs with thymine, forming two hydrogen bonds, and cytosine pairs with guanine, forming three hydrogen bonds. The sugar-phosphate backbone, consisting of alternating sugar and phosphate groups, forms the outside of the helix and is held together by covalent bonds, while the nitrogenous bases are stacked in the interior.
The correct answer to the student's question is: C. Hydrogen bonds between the base pairs hold the two strands of DNA together.
A community's species diversity is A) increased by frequent massive disturbance. B) increased by stable conditions with no disturbance. C) increased by moderate levels of disturbance. D) increased when humans intervene to eliminate disturbance. E) increased by intensive disturbance by humans
A community's species diversity is C) increased by moderate levels of disturbance.
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Which of the following is an example of aposematic coloration? A) stripes of a skunk B) eye color in humans C) green color of a plant D) colors of an insect-pollinated flower E) a katydid whose wings look like a dead leaf
Answer:
A) stripes of a skunk
Explanation:
The aposematic coloration is coloration that has been developed by the living organisms in order to warn the predators that they can be dangerous and harmful, thus to not attack them. Usually this type of coloration tends to stick out significantly when compared with the coloration of the other species that do not exhibit it, thus making it much more easy for the animal or plant to be recognized by the predators, which is benefiting both sides. The coloration of the skunk is a nice example of aposematic coloration. The skunk has black basis, but it has straight white stripes along its back. The two colors are contrasting, so it sticks out very easily. The predatory animals immediately notice it and just move along and do not bother the skunk because they are aware that it can pose a danger to them if they attack it.
Final answer:
The stripes of a skunk represent aposematic coloration, warning predators of its defensive odor spray.
Explanation:
The question asks which example is indicative of aposematic coloration, a strategy used by some animals to warn predators of their potential danger through vivid colors. Among the given options, stripes of a skunk (Option A) and the strawberry poison dart frog both use aposematic coloration to signal their respective defensive mechanisms against predators. Specifically, the skunk's stripes warn of its ability to spray an unpleasant odor, while the bright colors of the poison dart frog advertise its toxicity. Thus, the correct answer is A) stripes of a skunk, as it directly demonstrates an instance of aposematic coloration designed to deter potential predators.
If a cell were unable to produce histone proteins, which of the following would be a likely effect?
A) Spindle fibers would not form during prophase.
B) DNA polymerase I would not function properly.
C) Expression of other genes would compensate for the lack of histones.
D) The cell's DNA couldn't be packed into its nucleus.
D; because the cells dna is not in the nucleus
Hypovolemia is a condition in which a person has low levels of blood volume in their body. Which might be a reason for hypovolemia?
A) poor diet
B) dehydration
C) arteriosclerosis
D) lack of exercise
B. dehyrdation because without water, your body loses energy to make blood cells
Hypovolemia is a condition in which a person has low levels of blood volume in their body due to dehydration, which is option B. When a person loses fluids from their body due to sweating, diarrhea, vomiting, or not drinking enough fluids, it can lead to a decrease in blood volume and result in hypovolemia.
What is hypovolemia?Hypovolemia is a medical condition in which a person has a decreased blood volume in their body. There are several potential reasons that can lead to hypovolemia. One of the most common causes of hypovolemia is dehydration, which occurs when a person loses more fluid than they consume. This can be due to sweating, urination, vomiting, diarrhea, or not drinking enough water. Other causes of hypovolemia include blood loss from trauma, surgery, or gastrointestinal bleeding, which can result in a significant decrease in blood volume.
Hence, hypovolemia is a condition in which a person has low levels of blood volume in their body due to dehydration, which is option B. When a person loses fluids from their body due to sweating, diarrhea, vomiting, or not drinking enough fluids, it can lead to a decrease in blood volume and result in hypovolemia.
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Which of these terms applies to the relationship between a dog and a blood-sucking tick? A) predation B) competition C) parasitism D) commensalism E) mutualism
The relationship between a dog and a blood-sucking tick is classified as parasitism, where the tick benefits by feeding on the dog's blood, potentially harming the dog. Therefore, option C) parasitism is the correct answer.
The relationship between a dog and a blood-sucking tick is referred to as parasitism (option C). Parasitism is a type of symbiotic relationship where one organism, the parasite, benefits from the relationship, while the other organism, the host, is harmed. In this case, the tick gains nourishment by consuming the dog's blood, but this can lead to health problems for the dog, like irritation or the transmission of diseases.
According to the equilibrium model of island biogeography, species richness would be greatest on an island that is A) small and remote. B) large and remote. C) large and close to a mainland. D) small and close to a mainland. E) environmentally homogeneous.
According to the equilibrium model of island biogeography, species richness would be greatest on an island that is C) large and close to a mainland.
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Species richness is greatest on islands that are large and close to a mainland due to higher immigration rates and greater habitat diversity, which can support more species, option C is correct.
According to the equilibrium model of island biogeography, species richness would be greatest on an island that is large and close to a mainland. This model predicts that islands close to a mainland have higher rates of species migration due to proximity, which increases species diversity. Larger islands offer a greater availability of niches, can support larger populations, and have lower rates of species extinction compared to smaller islands. Thus, the combined effects of proximity to a source of species (mainland) and island size contribute to a higher species richness.
If you wanted to alter the structure of a bottom-up community, your best bet would be to A) remove the top predators. B) remove the trees and shrubs. C) add plenty of fertilizer. D) add more predators. E) reduce the number of primary producers.
Answer:
E) reduce the number of primary producers
Explanation:
The primary producers are the ones that are the basis of any ecosystem on the planet. They have the ability to produce food for themselves, thus they are autotrophs, and they are the ones that are the food source for the primary consumers. With reduction of the primary producers the whole ecosystem will instantly feel the effects. The primary consumers will be left without food, meaning that they will start to die out. The dying out of the primary consumers will lead to dying out of the secondary consumers, and their dying out will result in the dying out of the predators, or rather the tertiary consumers. The end result will be a collapse of the ecosystem, which will then be inhabited by other organisms, first through the primary succession, and then through the secondary succession, resulting in a new and different ecosystem.
1. Ear lobes in people may be free hanging or completely attached to the side of the face. This is determined by a single gene locus; the free hanging allele, E, is dominant and the attached allele (e) is recessive. A. A person has the heterozygous genotype Ee. With respect to this gene locus, how many kinds of gametes, eggs or sperm, will this person produce? What will the percent or frequency of each kind of gamete be out of the total possible?
Answer:
Explanation:
If there is a single gene locus for the ear lobe position a person has the heterozygous genotype Ee can produce two types of gametes: E and e. This is because gametes are haploid (contain only one set of chromosome) so they have only one allele of the gene, in this case dominant E or recessive e.Gametes are formed during meiosis and each gamete will receive one allele. So, in the case of heterozygous genotype Ee, person will make gametes that have either E or e with the 50-50% chance. Individual with EE genotype (dominant homozygous) will make only E gamets, while individual with ee genotype (recessive homozygous) will make only e gametes.A heterozygous individual (Ee) for earlobe attachment will produce two kinds of gametes—50% containing the dominant allele (E) and 50% containing the recessive allele (e). Earlobe attachment is an autosomal trait, with free-hanging earlobes being dominant.
Explanation:Genotypes and Gamete Formation
A person with a heterozygous genotype Ee for earlobe attachment will produce two kinds of gametes: one with the dominant allele (E) and one with the recessive allele (e). Since gametes are formed through meiosis, which separates the two alleles, each gamete will contain only one allele.
The frequency of each gamete type will be 50% for the dominant allele (E) and 50% for the recessive allele (e). This is because the person has only one copy of each allele to pass on, and there is an equal chance of passing down either the dominant or the recessive allele in a single gamete.
In terms of autosomal traits, earlobe attachment is controlled by a single gene with two different alleles located on one of the 22 human autosomes. The presence of free-hanging earlobes is a dominant trait, whereas attached earlobes are recessive.
Which organ system includes the bones and cartilages? Which includes the nasal cavity, lungs, and trachea?
Answer:
The skeletal system provides the shape and form for our bodies in addition to supporting and protecting our bodies, allowing bodily movement, producing blood cells, and storing minerals. This system consists of bones, cartilage, and joints.
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. It consists of the nose, larynx, trachea, diaphragm, bronchi, and lungs.
The organ system that includes the bones and cartilages is known as the Musculoskeletal system. While the organ system that includes the nasal cavity, lungs, and trachea is known as the respiratory system.
What is an Organ system?An organ system may be defined as a biological system that significantly consists of a group of organs that work together in order to perform one or more specific functions as per the requirement of the body.
The Musculoskeletal system or the skeletal system is the central framework of the body. It primarily consists of bones and cartilages along with tendons, ligaments, etc.
The respiratory system is a biological system that typically performs the function of gaseous exchange in animals and plants. In animals, it includes the nasal cavity, trachea, lungs, breathing muscles like the diaphragm, and the intercostal muscles.
Therefore, the musculoskeletal system is an organ system that includes the bones and cartilages, while the respiratory system is an organ system that includes the nasal cavity, lungs, and trachea.
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In chickens, the allele for feathered legs (F) is dominant over the allele for bare legs (f). In a population of chickens on a farm, 240 chickens have feathered legs (FF or Ff), and 80 chickens have bare legs (ff). How many chickens can be expected to be heterozygous for feathered legs (Ff)? Assume that the conditions of Hardy-Weinberg equilibrium apply to the population.
Answer:
0.5
Explanation:
According to Hardy-Weinberg equilibrium p2+2pq+q2=1 (p+q=1)
p2 is frequency of the dominant homozygous genotype
2pq is the frequency of the heterozygous genotype
q2 is the frequency of the recessive homozygous genotype
In the example above 80 chickens have bare legs (ff)-recessive homozygous which means that the frequency of that genotype is 80/240+80=0.25 (q2), frequency of the recessive allele is[tex]\sqrt{0.25}[/tex]=0.5. This means that the frequency of the dominant allele (p) is 1-0.5=0.5
So, the frequency of the heterozygous genotype (2pq) is 2*0.5*0.5=0.5
The frequency of the dominant homozygous genotype is p2=0.25
Hardy-Weinberg equilibrium referred to constant genetic variation in population from one generation to other in absence of disturbing factors. Here, heterozygous for feathered legs will be 160.
What is equation for Hardy-Weinberg equilibrium ?The basic requirements for Hardy-Weinberg equilibrium are no mutation, no gene flow, no selection etc.
Hardy-Weinberg equilibrium can be calculated as
[tex]p^{2}+2pq+q^{2} =1[/tex].
Here,
p=dominant true breed frequency.2pq=heterozygous frequency.q= recessive true breed frequency.Thus, according to given scenario, the heterozygous for feathered legs is expected to be 160.
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Which of the following statements regarding membrane function is false? The plasma membrane has receptors for chemical messages. The plasma membrane forms a selective barrier around the cell. The plasma membrane is the control center of the cell. The plasma membrane plays a role in transferring signals to the cell's interior. The plasma membrane creates compartments within the cell.
Answer:
The plasma membrane is the control center of the cell.
Explanation:
The plasma membrane is a thin, porous, microscopic envelope that coats the cells of prokaryotes and eukaryotes. It is a semipermeable structure responsible for the transportation and selection of substances entering and leaving the cell. It has several functions that are critical to cell development and survival, such as receptor receptors for chemical messages from outside the cell, as well as transferring signals into the cell, acting as a selective barrier and creating compartments within the cell. .
The false statement is that the plasma membrane is the control center of the cell, as this role belongs to the nucleus. The plasma membrane provides a selective barrier, regulates chemical messaging, and also allows recognition between cells.
The false statement regarding membrane function is 'The plasma membrane is the control center of the cell.' The control center of the cell is actually the nucleus while the plasma membrane has several other roles.
The plasma membrane performs the critical function of forming a selective barrier around the cell, determining what enters and exits the cell. It is also very flexible, allowing cells like red and white blood cells to change shape when necessary. Furthermore, the plasma membrane has receptors essential for cellular communication, helping the cell respond to chemical messages and playing a role in signal transduction by transferring signals to the cell's interior. It also helps in creating compartments within the cell and carries markers for cellular recognition important for tissue and organ formation as well as immune response.
Please explain thoroughly.
Why do so many earthquakes occur along the west coast of the united states? Explain using continental drift and seafloor spreading.
The study of animals' structures, behaviors, functions, and evolution is called _____. ethology zoology biology physiology
Answer:
zoology
Explanation:
it is the study of animals behaviour
Answer:
The correct answer is zoology.
Explanation:
zoology is the branch of biology in which one study the behaviors, structures, evolution and functions of the animals. It is also known as animal science. In Animal science, you study all the aspects of animals from its evolution to the structures to the structural and functional unit of the cell.
This discipline can include animal anatomy, biochemistry, physiology, genetics, evolution, ecology, behavior, evolution, and conservation.
Thus, the correct answer is zoology.
The feeding relationships among the species in a community determine the community's A) secondary succession. B) ecological niche. C) trophic structure. D) species-area curve. E) species richness
Answer:
The feeding relationships among the species in a community determine the community's trophic structure. C)
The feeding relationships among the species in a community determine the community's trophic structure.
What are feeding relationships?The term feeding relationships refers to the organisms that depend on each other as a source of food. Each feeding level in the ecosytem is called a trophic level.
The feeding relationships among the species in a community determine the community's trophic structure.
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For which is the SICAR database software used?
A.) profiling DNA
B.) identifying blood type
C.) identifying make and model of tires and footwear
D.) identifying fingerprints
Answer:
C.) identifying make and model of tires and footwear
Explanation:
SICAR 6, in conjunction with the SoleMate footwear database, is a complete solution for the identification of shoe prints recovered from crime scenes and the management of shoeprint evidence. A sole pattern coding technique is used to characterize a shoe print.
The SICAR database software is employed to identify the make and model of tires and footwear through the analysis of tread patterns for forensic investigations. Hence the correct option is C.
The SICAR database software is used for identifying make and model of tires and footwear. This tool is essential in forensic science for analyzing and comparing tread patterns found at crime scenes to a database of tires and shoe prints. This form of analysis does not involve DNA fingerprinting or genetic testing, which are used for identifying the source of a DNA sample left at a crime scene, determining paternity, or comparing ancient DNA with modern organisms. Instead, forensic experts use SICAR to match the specific patterns of shoes or tires to potential suspects, contributing to criminal investigations.
The lac operon can be regulated by two distinct methods. Which of the following statements are correct?The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.When glucose levels are low, the allosteric activator of the repressor protein dissociates, causing the repressor to release DNA and thereby allowing for transcription to occur.In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.cAMP levels increase in response to low glucose levels and this secondary messenger allosterically binds to the repressor protein, causing it to release from DNA.
Answer:
The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.Explanation:
Lactose operon or lac operon (includes lacZ, lacY and lacA genes) is found in some bacteria and the products of its genes are involved in lactose metabolism. So, this operon is active (genes are transcribed) when lactose is present and glucose is absent (or at low level). The operon is regulated by the lac repressor which acts as a lactose sensor and catabolite activator protein (CAP) which acts as a glucose sensor.
When there is lactose (in the form of allolactose) lac repressor detects it and stops being repressor. This enables transcription.
CAP detects glucose (via cAMP) and activates transcription when glucose levels are low.
Which of the following is an example of Müllerian mimicry? A) a butterfly that resembles a leaf B) two poisonous frogs with similar color patterns C) a minnow with spots that look like large eyes D) a beetle that resembles a scorpion E) a carnivorous fish with a wormlike tongue that lures prey
B) two poisonous frogs with similar color patterns
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