Answer: D
Explanation:
An increase in extracellular K+ would depolarize a neuron. This depolarization would occur if neurons were damaged. From what you have just learned about generating an action potential, what effect would this have on nearby axons? The nearby axonal membranes will ___________.
A rise in extracellular K+ depolarizes a neuron. If neurons were damaged, this depolarization would occur. The nearby axonal membranes will also depolarize.
This is because an increase in extracellular potassium (K+) ions causes the membrane potential of a neuron to become more positive, which is called depolarization. If a neuron becomes depolarized, this change in membrane potential can spread to nearby axons via the process of electrical signaling called an action potential. When an action potential is generated in an axon, the electrical charge on the membrane changes rapidly and propagates along the length of the axon. This causes the membrane potential of the neighboring axons to also become more positive, leading to depolarization of these axons as well.
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Kreb’s Cycle (What goes in and what comes out…Explain NAD+ to NADH here). For full points use the vocabulary HYDROGEN ATOM, PROTON, and ELECTRON in your answer
The Krebs Cycle, also known as the citric acid cycle or the tricarboxylic acid cycle, is a series of chemical reactions that occurs in the mitochondria of eukaryotic cells.
What is Kreb's cycle?The cycle is a key part of cellular respiration and is responsible for the production of energy in the form of ATP.
The cycle starts with the conversion of a molecule of acetyl-CoA, which is derived from the breakdown of glucose and other fuels, into citrate. This reaction is catalyzed by the enzyme citrate synthase and consumes one molecule of CoA and one molecule of oxaloacetate.
The citrate then undergoes a series of reactions that involve the removal of CO2 and the addition of hydrogen atoms (in the form of protons and electrons) to the molecule. These hydrogen atoms are picked up by a series of electron carriers, including NAD+ (nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide). The electrons from the hydrogen atoms are used to produce ATP and NADH (nicotinamide adenine dinucleotide) and FADH2 (flavin adenine dinucleotide) through the process of oxidative phosphorylation.
NAD+ is an oxidizing agent which accepts electrons and protons and is reduced to NADH. The electrons of NADH will be passed on to the electron transport chain to generate ATP. The cycle continues until all of the citrate has been converted back into its starting molecule, oxaloacetate.
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define the following terms: true breeding, hybridization, monohybrid cross, p generation, f1 generation, f2 generation
The following terms can be defined as:
True breeding: True breeding is a sort of breeding in which the parents generate kids with the same phenotype. This signifies that both parents are homozygous for all of the traits. Aberdeen Angus cattle are an example of real breeding.Hybridization: In genomics, hybridization is the process by which two complementary single-stranded DNA or RNA molecules join together to generate a double-stranded molecule. The bonding is determined by the correct base pairing between the two single-stranded molecules.Monohybrid cross: A monohybrid cross is a genetic mix of two people with homozygous genotypes, or genotypes with totally dominant or completely recessive alleles, resulting in opposing phenotypes for a certain genetic characteristic.P generation: The paternal generation is a basic P generation definition. The p generation is the first pair of parents in a genetic cross experiment. The F1 generation is the first generation created by the p generation.F1 generation: F1 refers to the first filial generation of seeds/plants or animal progeny produced by a cross-mating of markedly different parental types. In general, the characteristics of plants, insects, animals, and humans are the consequence of several gene interactions.F2 generation: It is the first filial generation resulting from the union of two separate parents. It is the second filial generation produced by crossing the F1 generation with oneself.To learn more on genetics click,
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Which of the following statement best describes how bacteria in a hot spring control the fluidity of their plasma membrane?a. They decrease the percentage of lipids with unsaturated hydrocarbon chains in their plasma membrane.b. Because they don't synthesize cholesterol, they cannot control membrane fluidity and therefore have a very fluid plasma membrane.c. They use cholesterol to prevent membranes from becoming too fluid.d. They form lipid rafts to prevent too much fluidity.e. They increase the percentage of lipids with unsaturated hydrocarbon chains in their plasma membrane.
e. They increase the percentage of lipids with unsaturated hydrocarbon chains in their plasma membrane. It is useful to measure the fluidity of bacterial cytoplasmic membranes using fluorescence polarisation techniques.
Bacteria actively regulate membrane fluidity in response to changes in temperature, pressure, ion concentrations, pH, food availability, and xenobiotics by altering the composition of their lipids. By altering the relative ratio of saturated to anteiso-branched fatty acids, their membrane fluidity is modified. When either the temperature or the amount of unsaturated lipids rises, membranes become more fluid. Cells control the production of lipid desaturases, which maintain a vital equilibrium between saturated and unsaturated membrane lipids, to maintain ideal membrane fluidity during temperature fluctuations.
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5. In which layer do most satellites orbit the Earth?
A. exosphere
B. stratosphere
C. thermosphere
D. mesosphere
Answer:
exosphere
Explanation:
in this layer, atoms and molecules escape into outer space and satellites orbit the earth
you're studying mn blood type (determined by one gene with two alleles) in hopi native americans, and you get the following genotype counts: mm: 33 mn: 62 nn: 23 based on these numbers, are the hopi at hardy-weinberg for this blood group gene? if they differ from hardy-weinberg, interpret the cause of the deviation. (if individual genotype frequencies are all within 0.05 of expectations, consider that to be not different; if individual genotype frequencies differ by more than 0.05 from expectations, then consider that to be different)
Based on the number of MN blood group genotypes, they are not from the HW data, possibly due to the Wahlund effect of interbreeding with neighboring tribes (or maybe inbreeding)
In population genetics, the Wahlund effect is the buildup of heterozygosity (ie when an organism has two different alleles at a locus) in a population caused by the structure of subpopulations. That is, if two or more subpopulations are in Hardy-Weinberg equilibrium but have different allele frequencies, the overall heterozygosity is less than if the entire population is in equilibrium. The underlying cause of this population subdivision could be a bottleneck to the geographic flow of genes followed by genetic shifts within the subpopulation.
Genotype frequency:
MM (p2) = 400/2000 = 0.2
MN(2pq) = 1200/2000 = 0.6
NN (q2) = 400/2000 = 0.2
Allele frequency:
Frequency M = p = p² + 1/2 (2pq) = 0.2 + 1/2 (0.6) = 0.2 + 0.3 = 0.5
Frequency N = q = 1-0.5 = 0.5.
Expected genotype frequencies (assuming Hardy-Weinberg):
MM (p²) = (0.5)² = 0.25
MN (2pq) = 2(0.5)(0.5) = 0.5
NN (q²) = (0.5)² = 0.25
Expected number of individuals from each genotype:
MM = 0.25 X 400 = 100
MN = 0.5 X 1200 = 600
NN = 0.25 X 400 = 100
CHI-SQUARE (X²):
X² = Σ(O-E)²/E
X² = (400-100)²/400 + (1200-600)²/1200 + (400-100)²/40
X² =225 + 180 + 200
X² =630
X² (Calculated) > X² (table), then reject the null hypothesis. Not on HWE.
Therefore, conclude there is a statistically significant difference between what was observed and what was expected under Hardy-Weinberg. That is, the null hypothesis is rejected and concludes that the population is not in HWE. They don't, possibly due to the Wahlund effect of interbreeding with neighboring tribes (or possibly inbreeding).
Complete question, see the picture
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Need help ASAP!!
Taking in carbon dioxide in hot, dry conditions is a challenge for plants because they can lose water through their open pores. Plants get around this by:
Opening pores just long enough to get carbon dioxide and convert it to a 4C sugar, then completing sugar fixation in a separate location away from the pore (This is done by _____ plants, like _____).
Opening pores at night to get carbon dioxide and convert it to a 4C sugar, then completing sugar fixation with pores closed during the day (This is done by _____ plants, like _____).
Opening pores just long enough to get carbon dioxide and convert it to a 4C sugar, then completing sugar fixation in a separate location away from the pore (This is done by CAM plants, like cacti and succulents).
Opening pores at night to get carbon dioxide and convert it to a 4C sugar, then completing sugar fixation with pores closed during the day (This is done by C4 plants, like corn and sugarcane).
What are the CAM about?CAM (Crassulacean Acid Metabolism) plants, like cacti and succulents, open their stomata (pores) at night when it is cooler and more humid to take in carbon dioxide and convert it to a 4C sugar. They then complete sugar fixation in a separate location away from the stomata, reducing water loss during the day when it is hot and dry.
Therefore, C4 plants, like corn and sugarcane, open their stomata at night to get carbon dioxide and convert it to a 4C sugar, then complete sugar fixation with the pores closed during the day, also reducing water loss during the day when it is hot and dry.
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homozygous for the three dominant traits: blank.target 1 of 4 homozygous for the three recessive traits: blank.target 2 of 4 heterozygous for all three characters: blank.target 3 of 4 homozygous for axial and tall, heterozygous for seed shape: blank.
An organism can be homozygous dominant or homozygous recessive depending on whether it possesses two copies of the same allele in the dominant or recessive chromosome. When an organism possesses two distinct alleles of the same gene, it is said to be heterozygous.
What is homozygous dominant homozygous recessive and heterozygous?The phrases genotype, phenotype, and trait are derived from the alleles of a gene that are present in an organism and the physical effects. A specific set of alleles for a certain gene makes up an organism's genotype. Accordingly, the flower-color gene may produce the genotypes red-red, red-white, and white-white in the pea plants mentioned above, for instance. An organism's allelic combination manifests physically as its phenotypic (genotype). There are only two potential phenotypes for pea plants when the red allele is dominant and the white allele is recessive. While plants with the white-white genotype will have the white phenotype, both the red-red and red-white genotypes will result in plants with the red phenotype.Using the aforementioned human examples, it is also possible to show how genotype and phenotype are related. People who have the normal-normal or normal-mutant genotypes for cystic fibrosis have the normal phenotype, whereas those who have the mutant-mutant genotype have the disease phenotype. When it comes to Huntington's disease, those with the normal-normal genotype exhibit the normal phenotype, whereas those with the normal-mutant or mutant-mutant phenotypic exhibit the diseased phenotype.To Learn more About homozygous dominant refer to:
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patrick's favorite shade of purple paint is made with 4 44 milliliters of blue paint for every 3 33 milliliters of red paint. which of the following paint mixtures will create the same shade of purple?
If we combine two or more colours in the same ratio, we get the same pigmentation of purple colour.
Consequently, 44 millilitres of blue paint and 33 millilitres of red paint are used to create a shade of purple paint. Which of the given compositions will give us the same shade of hue, we must determine. The answer to the question is that the ratio of blue to red in the paint is 4:34:3. In order to keep the ratio of 4:34:3, 88 millilitres of blue paint and 66 millilitres of red paint were combined.
The complete question is:
Patrick’s favorite shade of purple paint is made with 4 milliliters of blue paint for every 3 milliliters of red paint.
Which of the following paint mixtures will create the same shade of purple?
(Choice A)3 milliliters of blue paint mixed with 4 milliliters of red paint
(Choice B)8 milliliters of blue paint mixed with 6 milliliters of red paint
(Choice C)6 milliliters of blue paint mixed with 8 milliliters of red paint
(Choice D)20 milliliters of blue paint mixed with 15 milliliters of red paint
(Choice E) 12 milliliters of blue paint mixed with 16 milliliters of red paint.
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One variant in the green groups (Groups 1, 3, and 6) was used to make a vaccine that was distributed very early in the pandemic. Based on the graphed data, does it look like the vaccine was effective? Why or why not?
The green line never reaches 100 on the y-axis, indicating that it was successful used to make a vaccine that was distributed very early in the pandemic.
An effective acquired immunity to a specific infectious or cancerous disease is provided by a vaccination, which is a biological preparation. [1] Numerous studies and independent assessments have confirmed the vaccinations' efficacy and safety. The typical component of a vaccination is an agent that closely resembles a microbe that causes a disease; this agent is frequently created from weakened or deceased versions of the microbe, its toxins, or one of its surface proteins. The agent induces the body's immune system to identify the agent as a threat, eliminate it, and then identify and eliminate any associated bacteria that it may come into contact with in the future.
Vaccines can be either preventive (to shield against or lessen the symptoms of a future infection by a natural or "wild" pathogen) or therapeutic (to treat a condition that has already developed).
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Explain whether a graph was the appropriate type for the data being presented. (example, its a line graph but should have been a pie graph)
Explain mistakes in the way a graph is set-up. (example, the line graph did not use consistent or equal x-axis units)
How and what data could you arrange in a graph. (example, I could make a pie graph with this data)
Analyze a graph and explain some conclusion(s). (example, this bar graph showers fewer people will ____________
Answer: Whether a graph is the appropriate type for the data being presented depends on the nature and structure of the data, as well as the type of information that needs to be conveyed. For example, a line graph is often used to show trends over time, while a pie chart is used to show proportions of different categories. If a line graph was used to present data that would be better represented by a pie chart, it may not be the most effective way to convey the information.
Mistakes in the way a graph is set up can include things like using inconsistent or unequal units on the x-axis, failing to label axes or data points, and not providing a key or legend to explain the meaning of the data. These mistakes can make it difficult for the viewer to understand the information presented in the graph.
To create a graph, you would need to organize and arrange data in a way that is appropriate for the type of graph you want to create. For example, if you wanted to create a pie chart, you would need to have data that can be divided into categories, and you would need to calculate the proportions of each category.
Analyzing a graph involves interpreting the data presented in the graph and making conclusions about the information it conveys. For example, if a bar graph shows fewer people will participate in an event, one could conclude that there is a lack of interest in that event. Additionally, you can compare different sets of data presented in the graph, looking for patterns, trends and outliers.
macconkey agar without crystal violet is a culture medium useful in the presumptive identification of: ____
A culture media helpful in the gram-negative bacteria's presumptive identification is MacConkey agar without crystal violet.
In the Gram staining method of bacterial differentiation, gram-negative bacteria are defined as those that do not maintain the crystal violet stain. [1] They are distinguished by having cell envelopes made of a peptidoglycan cell wall sandwiched between a bacterial outer membrane and an inner cytoplasmic cell membrane. Almost every environment on Earth that supports life contains gram-negative bacteria. The Escherichia coli model organism is a gram-negative bacterium, as are many pathogenic bacteria including Pseudomonas aeruginosa, Chlamydia trachomatis, and Yersinia pestis. They provide a serious medical issue since their outer membrane shields them from a variety of medications, including penicillin, detergents that would typically disrupt the inner cell membrane, and lysozyme, an antibacterial enzyme generated by mammals that is a part of the innate immune system.
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although people can acquire phobias to almost any object or situation, certain phobias (e.g., those to snakes, spiders, heights) are much more common than others. this finding can best be explained by which of the following concepts? responses biological preparedness biological preparedness spontaneous recovery spontaneous recovery stimulus discrimination stimulus discrimination stimulus generalization stimulus generalization observational learning
The finding that certain phobias in people are much more common than others can best be explained by the concept of biological preparedness.
Biological preparedness is described as the idea that people and animals are inherently inclined to form associations between certain stimuli and responses. This concept of Biological preparedness fills a huge role in learning, particularly in understanding the classical conditioning process. So in cases where people can acquire phobias to almost any object or situation, certain phobias (e.g., those to snakes, spiders, and heights) are much more common than others, it can be explained by the concept of Biological preparedness. Response generalization is an critical detail of operant conditioning. It takes place while someone can generalize a conduct found out withinside the presence of a stimulus after which generalize that reaction to another, comparable stimulus.
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Some hormones enter cells via _____. A) exocytosis. B) pinocytosis. C) receptor-mediated endocytosis. D) primary active transport.
The latest studies of bee colonies, which can include up to 80,000 individuals, shed new light on what some scientists believe is the most elaborate social structure next to human beings in the animal kingdom.
A. is the most elaborate social structure next to human beings in the animal kingdom
B. to be the animal kingdom's most elaborate social structure after human beings
C. is the most elaborate social structure in the animal kingdom next to that of human beings
D. to be the most elaborate social structure in the animal kingdom next to human beings
E. is the most elaborate social structure disregarding that of human beings in the animal kingdom
Correct Answer is C. is the most elaborate social structure in the animal kingdom next to that of human beings.
How does the division of labor within bee colonies contribute to their elaborate social structure?The division of labor within bee colonies is a key factor that contributes to their elaborate social structure. In a bee colony, there are three types of bees: the queen, drones, and worker bees. Each type of bee has a specific role and responsibility that they specialize in. The queen bee is responsible for reproduction, drones are responsible for mating and reproducing, and worker bees are responsible for foraging for food, taking care of the young, and maintaining the hive. This division of labor allows for a high level of efficiency and organization within the colony, which leads to the elaborate social structure that scientists have observed.
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which of the following is an enzyme that attacks cell walls of gram-positive bacteria making it inhospitable to most bacteria?
In peptidoglycan, a component of the bacterial cell wall, lysozyme breaks the connection between NAG and NAM.
What enzyme breaks down the gram-positive bacteria's cell walls? In peptidoglycan, a component of the bacterial cell wall, lysozyme breaks the connection between NAG and NAM.Gram-positive bacteria, which do not have the gram-negative bacteria's protective outer layer, are more susceptible to it.Gram-positive bacteria are lysed by the glycoside hydrolase lysozyme (15 kDa), which is expressed by the Lyz gene. It does this by hydrolyzing a glycan link of a peptidoglycan made of N-acetylglucosamine and N-acetylmuramic acid on the surface of Gram-positive bacteria.Lysozyme's antibacterial action is particularly effective against Gram-positive bacteria because of its capacity to hydrolyze the -1,4-glycosidic bond found in the polysaccharide layer of these bacteria cell walls.Biological fluids including saliva, milk, and tears include the naturally occurring enzyme lysozyme.To learn more about lysozyme refer
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The continuity of life is based on heritable information in the form of DNA. How does the process of mitosis faithfully parcel out exact copies of this heritable information in the production of genetically identical daughter cells?
A. During mitosis, each chromosome becomes attached to the centromere. At anaphase, centromeres drag random chromatids toward the poles of the cell, where they become duplicated. As a result, two identical chromosomal sets form at each pole.
B. During mitosis, each chromatid of a duplicated chromosome becomes attached to the microtubule of one of the mitotic spindles. At anaphase, mitotic spindles pull the chromatids toward the poles of the cell, therefore forming two identical chromosomal sets at each pole. C. During mitosis, each chromosome becomes attached to the centromere. At anaphase, centromeres drag random chromosomes toward the poles of the cell, where they become duplicated. As a result, two identical chromosomal sets form at each pole. D. During mitosis, each duplicated chromosome becomes attached to the microtubule of one of the mitotic spindles. At anaphase, mitotic spindles pull the chromosomes toward the poles of the cell, therefore forming two identical chromosomal sets at each pole.
Every chromatid of such a duplicated chromosome attaches to a microtubule of a mitotic spindle during mitosis.Sister chromatids that are genetically identical to their parent cells are created during mitosis.
Through its four stages—prophase, metaphase, anaphase, and telophase—mitosis faithfully distributes perfect copies of this genetic material to create daughter cells that are genetically identical. A nuclear envelope deteriorates during prophase because it prevents the chromosomes from reaching the cytoplasm. Sister chromatids that are genetically identical to their parent cells are created during mitosis. The cell divides its copied chromosomes equally to ensure that each daughter cell does have a full set before copying, or "replicating," its chromosomes. Mitosis produces brand-new cells that are genetically similar to one another. Some algae species have the capacity for rapid growth. The enormous kelp Macrocystis pyrifera has a growth rate.
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Fertilization is most likely to occur when intercourse occurs __________ although sperm can live in the woman's body as long as __________ after ejaculation.
Thus, even if sexual activity occurs a few days after ovulation, fertilisation can still take place. An oocyte, on the other hand, can endure.
Usually, the fallopian tube that connects an ovarian to the uterus is where fertilisation occurs. An embryo begins to develop if the fertilised egg successfully passes through the fallopian tube & implants in the uterus. There is sporadic contact between both the egg and sperm. The egg sleeps for an additional 30 hours until it reaches the ampullar-isthmic junction, a particular area of the tube. In this section of the tube, the sperm and egg unite to form the fertilised egg. The fertilised egg then starts to quickly fall toward the uterus. Capable sperm can connect to the oocyte and penetrate to the zona pellucida of the egg by releasing the digestive juices in the acrosome when they come into touch with the oocyte (the acrosomal reaction).
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A _______ is the complete set of chromosomes of an organism, arranged and and displayed in pairs and ordered by size. (Select the BEST answer.)
a. genome
b. karyotype
c. nucleus
d. heredity
e. gene
Answer:
b. karyotype
Explanation:
A karyotype is the complete set of chromosomes of an organism, arranged and displayed in pairs and ordered by size. It is used to identify chromosomal abnormalities and to study the genetic makeup of an organism. The karyotype can be visualized through a microscope after staining the chromosomes to make them visible. It is a powerful tool in genetics, as it can be used to identify specific chromosomal disorders and to study the genetic makeup of an organism.
pick two peers who chose current events or personal experiences different from yours. offer your own ideas about how having knowledge of the social sciences might affect how your peers understand the events they identified.
Answer:
Having knowledge of the social sciences can help one to understand the social, cultural, economic and political contexts in which events occur. For example, if one of your peers has chosen a current event related to economic inequality, knowledge of the social sciences can provide them with an understanding of the economic systems and policies that contribute to inequality, as well as the historical and cultural factors that shape people's perceptions of and responses to economic inequality.
If another peer has chosen a personal experience related to race relations, knowledge of the social sciences can provide them with an understanding of the historical and ongoing structural inequalities that shape race relations, as well as the cultural and psychological factors that influence people's beliefs and behaviors around race.
In summary, having knowledge of the social sciences can help one to understand the complexities and nuances of current events and personal experiences, and to see how these are shaped by larger social, cultural, economic and political forces.
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which of the following is a threat that is particular to our fresh-water supply typical for coastal areas?
-Many technologies that are already available can help us save enough water to hedge against climate change and reduce stress on threatened natural resources while still allowing us to meet our -needs for agricultural, industrial, and residential use.
-By 2020, enough water can be saved from indoor residential uses alone to meet the needs of over 5 million people.
-Proper irrigation can save another 450 thousand-acre-feet (KAF) of water per year. This is enough to satisfy the needs of another 3.6 million people (1 acre-foot supplies two households of four people for a year).
The availability of freshwater resources and coastal habitats are under threat in these areas due to the high water demand.
What is the main threat to the world's freshwater supply?Among these dangers include pollution, the results of climate change, a rise in diseases associated with water, and the extinction of freshwater ecosystems.As a result, there will be issues with water scarcity, excessive groundwater extraction, saltwater intrusion, and wetlands damage.The five categories under which we categorise threats to freshwater biodiversity globally are overexploitation, water pollution, flow modification, habitat destruction or degradation, and invasion by exotic species.Numerous human activities pose threats to freshwater systems, such as channelization, groundwater pumping, diversion, dam construction, pollution, human-induced climate change, and overuse of natural resources (e.g., Postel & Carpenter 1997; Malmqvist & Rundle 2002).The three broadest types are physical security threats (such equipment damage from power outages), natural threats (like earthquakes), and human threats.To learn more about freshwater refer to:
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Which of the following is (are) true regarding the activity of a protein regulated by phosphorylation?
A) It depends mostly on the concentration of inorganic phosphate inside the cell.
B) It depends on the balance in the cell between active kinase and active phosphatase molecules.
C) It is dependent on the site of attachment of the protein to the plasma membrane.
D) Only A and B are true.
E) A, B, and C are true.
Only A and B are true.
It depends mostly on the concentration of inorganic phosphate inside the cell. It depends on the balance in the cell between active kinase and active phosphatase molecules.
What is phosphorylation?
Phosphorylation is a process in which a phosphate group is added to a molecule, usually a protein, by the action of a kinase enzyme.
It is an important mechanism in cellular regulation and signaling, as the addition of the phosphate group can alter the structure and activity of the protein, allowing it to interact with other molecules in the cell.
Therefore, Option D is correct.
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name the labeled organelles in the animal cell model. orgaelle a hint: this organelle collects; packages, organizes, and distributes; proteins; carbohydrates; and lipids. organelle b (full name) hint: this organelle contains ribosomes b
Organelle A is Golgi apparatus and Organelle B is endoplasmic reticulum (ER) in animal cell model.
The Golgi apparatus, also known as the Golgi complex or Golgi body, is a cellular organelle found in eukaryotic cells that plays an important role in the modification, sorting, and transport of proteins and lipids. The Golgi is made up of several stacks of flattened, membrane-bound sacs called cisternae. The endoplasmic reticulum (ER) is a network of flattened, membrane-bound sacs and tubules that is present in the cytoplasm of eukaryotic cells. It is a multifunctional organelle that plays a crucial role in protein synthesis, folding, and modification.
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Suppose a geneticist uses a three point testcross to map three recessive, linked hummingbird wing shape mutations called tn, r, and b, where tn is associated with thin wings, r is associated with round wings, and b is associated with blunt wings. He first crosses homozygous blunt birds to homozygous thin, round birds. Next, he testcrosses the F1 progeny to thin, round, blunt birds. He obtained the results shown.Given this data, label the progeny phenotypic classes as either parental, single crossover (SCO), or double crossover (DCO) recombinant types. Each label may be used multiple times. Two classes have already been filled in.Phenotype Number Recombinant typeblunt 821 thin, round 815 round 179 thin, blunt 161 SCOthin 7 round, blunt 8 thin, round, blunt 24 SCOwild type 27 Answer Bank:parentalDCOSCO
The progeny phenotypic classes can be classified as parental: blunt and thick and round, SCO: thick and blunt, round, thick, round and blunt; DCO: thick, round and blunt.
First, the geneticist crosses homozygous rapid, zigzag flies with homozygous narrow flies. The Fi progeny is then testcrossed to fast, zigzag, and narrow parents, yielding the results shown in the table. A three point testcross in linkage analysis refers to examining the inheritance pattern of three alleles by mating a triple recessive homozygote with a triple heterozygote. It allows us to establish the spacing between the three alleles as well as their chromosomal order.
Based on the observation from the given data, the progeny phenotypic classes can be labelled as follows:
Blunt- parental
Thick, round- parental
Round- SCO
Thick, blunt- SCO
Thick- DCO
Round, blunt- DCO
Thick, round, blunt- SCO
Wild type- SCO
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The term __________ refers to the belief that those species of animals, including human beings, that are best adapted to their environment survive and prosper, whereas those that are poorly adapted die out.
a. social relativism
b. social Darwinism
c. social statics and dynamics
d. social eugenics
The term social Darwinism refers to the belief that those species of animals, including human beings, that are best adapted to their environment survive and prosper, whereas those that are poorly adapted die out.
What is species?
Species is a taxonomic rank used in the biological classification of living organisms, which is denoted by a Latin binomial, such as Homo sapiens. A species is defined as a group of organisms that can interbreed and produce fertile offspring, while members of different species cannot interbreed.
Therefore, Option B is correct.
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determine the phenotypic ratios of the offspring. determine the phenotypic ratios of the offspring. 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated
The children's phenotypes can be used to determine the unidentified genotype.
The children's phenotypes can be used to determine the unidentified genotype. If only dominant phenotypes result from mating the recessive phenotype individual with the unknown dominant phenotype (PP or Pp genotype), the unidentified person is homozygous dominant (no recessive). What is the name of the process used to determine the genotype of an unidentified person? Another essential invention by Gregor Mendel is the test cross. In a genetic experiment known as a test cross, a homozygous recessive organism with a dominant phenotype is crossed with an unknown genotype (and phenotype). In Mendelian genetics, the heritability of traits is the main focus. These characteristics are each bundled into a separate gamete, inherited separately, and frequently display dominance, where one characteristic's effects might conceal those of others.
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Which of the following best illustrates the importance of altered DNA nucleotides in evolutionary processes?
a. Bacteria have a single circular chromosome whereas eukaryotes have several linear chromosomes
b. short bits of single-stranded DNA left at the end of DNA molecules cut by restriction enzymes
c. the fragments will bond to other fragments with complementary single-stranded ends
d. In a temporally variable environment, a population of bacteria with an elevated rate in replication error can have a selective advantage over other populations with lower rates in replication error.
Another mechanism that remove & replace damaged bases is nucleotide excision repair. The DNA double helix can sustain several sorts of damage, which nucleotide excision repair can identify and fix.
Describe a nucleotide?They function as deoxyribonucleic acid polymers' monomeric units. A phosphate group, a five carbon sugar, as well as a nitrogenous base make up a nucleotide. Adenine, cytosine, purine, and thymine are the four nitrogenous compounds found in DNA. Instead of thymine, uracil is found in RNA. All recognized living things have genetic material made up of a chain of nucleotides. They perform numerous other tasks, such as acting as molecules that move energy and as messengers, in addition to storing genetic information.
Describe a polymer?Greek terms for whence the word "polymer" is derived.
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FILL IN THE BLANK In the diploid cells of an organism, there can be ______ different allele(s) of a given single-copy nuclear gene
In the diploid cells of an organism, there can be three different allele(s) of a given single-copy nuclear gene.
A specific gene in a diploid organism has three distinct alleles. Two of these three alleles display co-dominance, and one of them is recessive. A specific gene in a diploid organism has three distinct alleles. A specific gene in a diploid organism has three distinct alleles.
Two of these three alleles display co-dominance, and one of them is recessive. When an organism's cells have two full sets of chromosomes, with one chromosome from each parent present in each pair, the organism is said to be diploid. Since humans have 23 chromosomal pairs in the majority of their cells, they are diploid.
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URGENT !!! PLEASE HELP ME
Match the terms to the best description.
1. Hydrolysis
2. Monomer
3. Fatty acid
4. Polysaccharide
5. Starch
6. Glucose
7. Carbohydrate
8. Lipid
9. Dehydration Synthesis
10. Monosaccharide
11. Polymer
12. Glycogen
13. Phospholipid
a. A large molecule made up of linked monomers
b. C₂H₁2O6
c.An organic compound with C, H, and O in 1:2:1 ratio
d. A carbohydrate used to store short-term energy in animals
e. Monomer of carbohydrates; "one sugar"
f. Another term for carbohydrate; made of many monosaccharides
g. Reaction that breaks up a polymer into monomers by adding
water
h. A lipid that has a hydrophilic head and 2 hydrophobic tails that
make up biological membranes
i. Long, linear molecule made of mostly Cs & Hs; monomer of lipids
j. A single unit that can be linked together to make a polymer
k. A biomolecule used for long-term energy storage
l.A carbohydrate used to store short-term energy in plants
m. Reaction that links monomers into a polymer by removing
Water
Answer: A. polymer
B. glucose
C. carbohydrate
D. glycogen
E. monosaccharide
F. polysaccharide
G. hydrolysis
H. phospholipid
I. fatty acid
J. monomer
K. lipid
L. starch
M. dehydration synthesis
Explanation:
part c what are the possible results of a nondisjunction event in meiosis i versus in meiosis ii? sort each item to the appropriate bin. if a description can apply to both meiosis i and ii, sort it to the third bin. resethelp nondisjunction in meiosis idroppable nondisjunction in meiosis iidroppable nondisjunction in either meiosis i or meiosis iidroppable
Non disjunction is a genetic error that occurs during meiosis, the process of cell division that produces sperm and egg cells. There are two types of meiosis: Meiosis I and Meiosis II. Here are the possible results of a nondisjunction event in each type of meiosis:
What are the possible results of a nondisjunction event?Meiosis I:Chromosomes fail to separate properly, resulting in one cell with an extra chromosome and another cell with a missing chromosome. This can lead to conditions such as Down Syndrome (extra chromosome 21) or Turner Syndrome (missing chromosome X).A cell may end up with an extra set of chromosomes, resulting in a condition known as trisomy. Meiosis II:Chromosomes fail to separate properly, resulting in one sperm or egg cell with an extra chromosome and another sperm or egg cell with a missing chromosome. This can lead to a fertilized egg with an extra or missing chromosome, leading to conditions such as Down Syndrome or Turner Syndrome.Nondisjunction in Either Meiosis I or Meiosis II:Chromosomes may end up in the wrong cell, leading to a condition known as translocation.Chromosomes may break and reattach in a different place, leading to a condition known as inversion.It is important to note that while these errors in meiosis can lead to genetic disorders, they can also occur without any noticeable effects. Nondisjunction events are also a major contributor to genetic diversity in a population.To learn more about nondisjunction event refer:
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