selective pressures group of answer choices are unimportant in the evolutionary process. are not related to adaptation. can change if the environment changes. remain constant, regardless of the environment.
selective pressures an change if the environment changes.
The correct answer is option C.
The picky pressure description is an evolutionary force that causes a particular phenotype to be more favorable in certain environmental conditions. picky pressures are considered forces that drive elaboration via natural selection. Some phenotypes are more favorable than others, depending on external conditions. Natural selection is one variable in elaboration, but it isn't the only type of selection. Other types of selection include artificial, sexual and kin selection.
These picky pressures affect in accommodations-particular cultures or body plans that give an advantage in a specific terrain. Selection pressures are external agents which affect an organism's capability to survive in a given terrain. Selection pressures can be negative( decreases the circumstance of a particularity) or positive( increases the proportion of a particularity)
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Identify and describe something that has a particular structure.
Answer:
The red blood cell?
Explanation:
Because the red blood cell is known to have a specific structure, it exhibits a round appearance. Its structure will only change when the body suffers from a lack that alters its form or structure.
What's the red blood cell?
"A type of blood cell that is made in the bone marrow and found in the blood. Red blood cells contain a protein called hemoglobin, which carries oxygen from the lungs to all parts of the body."
-National Cancer Institute (.gov)
positive frequency dependent selection results in greater genetic variance in a population...true or false
The statement that "positive frequency dependent selection results in greater genetic variance in a population" is true as positive frequency dependent selection occurs when the reproductive success of a particular genotype increases as it becomes less common in the population.
This causes the population to have a greater diversity of genotypes, which in turn leads to an increase in genetic variance.
In a population where positive frequency dependent selection is in effect, the more common genotypes will tend to be less fit than the rare genotypes. This increases the competition between the individuals of the population, which drives them to adapt to their environment faster. As a result, the population will have a greater variety of genotypes which are better adapted to their environment and, therefore, a higher genetic variance.
Another factor that leads to greater genetic variance in populations under positive frequency dependent selection is the higher level of genetic drift. Genetic drift is the random process by which genes are randomly distributed throughout the population. Because positive frequency dependent selection results in a greater variety of genotypes, the effects of genetic drift will be increased as well. This further contributes to the population’s higher genetic variance.
In conclusion, positive frequency dependent selection does result in greater genetic variance in a population. This is because the more common genotypes become less fit than the rare genotypes, leading to an increase in competition which drives adaptation. Additionally, the higher level of genetic drift contributes to the higher genetic variance.
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Does natural selection influence evolution? Your response needs to be at least one paragraph.
Answer:
Natural selection drives evolution by preserving favorable variations and causing the extinction of unfavorable variations.
Explanation:
Natural selection is the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than other of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations. Evolution is the change of a gene pool of a population from generation to generation by such processes as mutation, natural selection, or genetic drift.
Therapeutic Cloning refers to the scientific attempt to coax embryonic stem cells into becoming the specialized body parts of a particular donor.
true ofr false
The given statement "therapeutic cloning refers to the scientific attempt to coax embryonic stem cells into becoming the specialized body parts of a particular donor" is true. This process involves creating an embryo with the donor's genetic material and then extracting the embryonic stem cells, which have the potential to develop into any cell type in the body.
What is therapeutic cloning?Therapeutic cloning is the procedure of creating cloned embryos to use their embryonic stem cells in medical therapy. Scientists remove the nucleus from an egg and replace it with the nucleus of a specialized body cell in therapeutic cloning. This reprogrammes the egg cell to grow into an embryo, which then produces embryonic stem cells similar to those found in human embryos. Therapeutic cloning research is performed to generate organs, tissues, and cells that can be used to treat a variety of diseases and illnesses, including diabetes, heart disease, and Parkinson's disease.
Therefore, the given statement is true.
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the reverse of the reaction carried out by pyruvate kinase in glycolysis is carried out by which enzyme(s) in gluconeogenesis? pyruvate carboxylase fructose 1,6-bisphosphatase phosphoenolpyruvate carboxykinase both pyruvate carboxylase and phosphoenolpyruvate carboxykinase
The reverse of the reaction carried out by pyruvate kinase in glycolysis in gluconeogenesis is carried out by both pyruvate carboxylase and phosphoenolpyruvate carboxykinase in gluconeogenesis.
Pyruvate kinase is an enzyme that catalyzes the conversion of phosphoenolpyruvate (PEP) to pyruvate, with the production of adenosine triphosphate (ATP). In gluconeogenesis, pyruvate carboxylase catalyzes the conversion of pyruvate to oxaloacetate, a reaction that is the opposite of the reaction catalyzed by pyruvate kinase in glycolysis. In addition, phosphoenolpyruvate carboxykinase (PEPCK) is involved in the conversion of oxaloacetate to phosphoenolpyruvate (PEP), with the production of guanosine triphosphate (GTP). Both of these reactions are the reverse of the reaction catalyzed by pyruvate kinase in glycolysis.
Pyruvate carboxylase and phosphoenolpyruvate carboxykinase play an important role in the conversion of energy from pyruvate to oxaloacetate and phosphoenolpyruvate, respectively. These reactions are essential for the production of energy during gluconeogenesis. In addition, fructose 1,6-bisphosphatase is also involved in gluconeogenesis, catalyzing the hydrolysis of fructose 1,6-bisphosphate to form fructose 6-phosphate and inorganic phosphate.
In summary, the reverse of the reaction catalyzed by pyruvate kinase in glycolysis is catalyzed by both pyruvate carboxylase and phosphoenolpyruvate carboxykinase in gluconeogenesis, and is also assisted by fructose 1,6-bisphosphatase. These enzymes are essential for the production of energy in gluconeogenesis.
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the cell cycle describes a series of events from the beginning of one cell division (when a cell is born) to the beginning of the next cell division (when the cell is ready to divide). the cell cycle is divided into two major phases:
The cell cycle is divided into two major phases: the interphase and the mitotic phase.
The cell cycle describes a series of events that occur from the beginning of one cell division (when a cell is born) to the beginning of the next cell division (when the cell is ready to divide).
Interphase is a non-dividing phase that is further divided into three phases. These phases are G1, S, and G2. In the G1 phase, the cell grows and develops while preparing to replicate its DNA in the next phase. In the S phase, the DNA is replicated to form two identical sets of chromosomes. In the G2 phase, the cell prepares for cell division by producing organelles and molecules required for the mitotic phase.
The mitotic phase is a dividing phase that consists of four stages. These stages are prophase, metaphase, anaphase, and telophase.
The cell then undergoes cytokinesis, which results in the division of the cytoplasm to produce two identical daughter cells.
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biology forum what has been found to serve as a prerequisite to using moral judgment to direct one's actions?
There are some prerequisites to using moral judgment to direct one's actions, and these include cognitive abilities, development of theory of mind, and emotional competence. The social interaction and observational learning of the child can lead to the development of moral beliefs, rules, and values.
Moral development is the process by which a person's moral understanding evolves, and it is based on their environment and experiences. It is determined by various factors such as cultural values, family upbringing, educational experiences, and religious practices. Cognitive abilities are necessary for developing moral judgments because they enable people to understand and comprehend information that is essential for moral reasoning. Children's cognitive development is influenced by the environment they grow up in, and this affects their ability to process information effectively. Development of theory of mind is another essential prerequisite for using moral judgment to direct one's actions. Theory of mind refers to the ability to understand that other people have beliefs, desires, and intentions that may be different from one's own. Emotional competence is also necessary for moral judgment because it allows people to understand the emotions of others and how their actions may affect those emotions. Emotional competence is also essential because it helps people regulate their own emotions and understand the impact of their behavior on others. Therefore, cognitive abilities, development of theory of mind, and emotional competence are some of the prerequisites for using moral judgment to direct one's actions.
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which structural layer of blood vessels is most responsible for maintaining blood pressure? group of answer choices tunica intima subendothelial tunica media tunica externa
The tunica media is the structural layer of blood vessels most responsible for maintaining blood pressure. Option C.
It is made up of a layer of smooth muscle cells and elastic connective tissue, which act together to regulate blood flow and pressure. The elastic connective tissue is able to stretch and expand, helping to maintain a constant pressure within the vessel walls.
When the pressure increases within the vessel, the muscle cells contract to restrict the flow, while when the pressure decreases the muscle cells relax to allow more blood flow.
The tunica intima, or innermost layer of the vessel wall, is composed of endothelial cells and helps to protect the vessel from damage. The subendothelial layer lies beneath the endothelial cells and provides a framework for the endothelial cells to attach to. Lastly, the tunica externa is the outermost layer of the vessel wall and helps to provide strength and support.
Together, these three layers of the blood vessel help to maintain consistent blood pressure and ensure the flow of blood throughout the body.
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if a testcross between a female fly with long bristles and a gray body and a male with short bristles and an ebony body was completed, which two categories of flies will likely have the greatest numbers of offspring? multiple select question. long bristles, gray body short bristles, ebony body long bristles, ebony body short bristles, gray body
If a testcross between a female fly with long bristles and a gray body and a male with short bristles and an ebony body was completed. The two categories of flies that will likely have the greatest numbers of offspring are long bristles, gray body and short bristles, ebony body.
In a testcross between a female fly with long bristles and a gray body and a male with short bristles and an ebony body, the female is homozygous dominant and the male is homozygous recessive. The offspring will show the dominant phenotype because the dominant allele will mask the recessive one. The F1 generation will have a long bristle and gray body. In the F2 generation, the offspring will show both dominant and recessive traits. Among the offspring, there will be flies with long bristles and gray body, short bristles and ebony body, long bristles and ebony body, and short bristles and gray body.
The dominant and recessive alleles assort independently during meiosis. The probability of the traits is 9:3:3:1. This means that out of 16 offspring, 9 will have long bristles and gray body, 3 will have short bristles and ebony body, 3 will have long bristles and ebony body, and 1 will have short bristles and gray body. Therefore, the two categories of flies that will likely have the greatest numbers of offspring are long bristles, gray body and short bristles, ebony body.
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the auditory cortex is located in which lobe of the brain? a. frontal b. occipital c. parietal d. temporal
Answer:
It is located at the superior temporal gyrus in the temporal lobe
The auditory cortex is located in the temporal lobe of the brain. This is the part of the brain responsible for the processing of auditory information, such as sound and language. It is also responsible for memory formation related to sound.
The temporal lobe is located in the lower part of the brain, behind the ears, and is divided into two regions: the superior temporal gyrus and the inferior temporal gyrus.
The superior temporal gyrus contains the primary auditory cortex, which is responsible for the processing of sound and language. It receives input from the ears, and from the temporal part of the thalamus, which serves as an intermediary between the ears and the cortex.
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the type of functional genomics study that uses dna fragments to detect and measure gene expression is called a dna
A DNA microarray is a type of functional genomics study utilizing DNA fragments to detect and measure gene expression.
Functional genomics focuses on the dynamic expression of gene products in a particular context, such as during an illness or a particular stage of development. In functional genomics, we attempt to create a model connecting genotype to phenotype using our present understanding of gene function.
Transcriptomics is the study of gene expression across the whole genome. The quantity of RNAs is being investigated in the field of transcriptomics. Although mRNA is frequently the subject of this research, sRNAs and tRNAs might also occasionally be of interest. Studies of gene control, such as epigenetics (which genes are turned on or off), transcription, and other topics are covered by functional genomics.
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Correct Question:
A DNA ______ is a type of functional genomics study utilizing DNA fragments to detect and measure gene expression.
The common structural pattern that is a distinguishing characteristic specific to all G-protein-coupled receptors is that they...
A. are transmembrane proteins.
B. have a kinase domain on the intracellular side of the plasma membrane.
C. are only active when pairs of receptors dimerize.
D. contain seven transmembrane helices.
The common structural pattern that is a distinguishing characteristic specific to all G-protein-coupled receptors is that they contain seven transmembrane helices (Option D). This structural pattern allows them to interact with G proteins and transmit signals across the plasma membrane.
G-protein-coupled receptors (GPCRs) are a class of cell surface receptors that respond to various extracellular signals such as light, odorants, hormones, and neurotransmitters. They are involved in a wide range of physiological and pathological processes, and they are also the targets of many drugs, making them an essential class of receptors to study.
The structural pattern specific to all G-protein-coupled receptors is that they contain seven transmembrane helices, which are arranged in a specific way to form a pocket that binds to extracellular ligands. This structural pattern is also known as the seven-transmembrane domain or 7TM domain. The seven transmembrane helices are arranged in a circular fashion, with the extracellular loops facing outwards and the intracellular loops facing inwards.
Thus, option D- contain seven transmembrane helices is the correct answer.
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) how did dr. alfred wegener use both fossils and present-day plants and animals to support continental drift theory? clearly explain the lines of evidence and logic he used to support his conclusions. for present day plants and animals and considering divergent evolution, consider why africa has different large animals and snakes compared with north american.
Dr. Alfred Wegener used fossils and present-day plants and animals to support the continental drift theory in the following ways: Lines of evidence, Fossils, Paleoclimate, Logical reasoning, divergent evolution.
Lines of evidence: Dr. Alfred Wegener used the following lines of evidence to support his theory of continental drift.
Fossils: Dr. Alfred Wegener used the presence of fossils on different continents as evidence for the existence of land bridges in the past. For example, he found fossils of the same species of plants and animals in different continents such as South America and Africa, which suggested that they were once connected.
Paleoclimate: He also used paleoclimate data, including the distribution of glaciation patterns and rock formations, to support his theory.
Logical reasoning: Wegener reasoned that if continents had once been connected, then the continents themselves must have drifted apart, rather than having been pushed apart by some other mechanism. This led him to propose the idea of continental drift.
Considering divergent evolution: Divergent evolution is the process by which species with the same ancestral origin develop different characteristics over time as they adapt to different environments. For example, Africa has different large animals and snakes compared to North America because of divergent evolution.
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Students in a class measured the mass of various living organisms. They then kept the organisms in the dark for 24 hours before remeasuring them. None of the organisms were provided with nutrients during the 24-hour period. The data are as follows Surting Mass (p) Final Mass 15:10 14.01 Organim Elodea (submerged aquatie plant) Goldfish Sea anemone 9.84 10.10 25.60 2498 Which of the following is the best explanation for the pattern of change in mass of the organisms over time? (A) Water loss doe to evaporation (B) Cellular respiration C) The law of conservation of matter (D) Growth and reproduction
The best explanation for the pattern of change in mass of the organisms over time is (B) Cellular respiration.
Cellular respiration is a metabolic process that occurs in the cells of living organisms, where nutrients are converted into energy in the form of ATP (adenosine triphosphate). During this process, some of the mass of the organism is lost in the form of carbon dioxide and water, which are byproducts of cellular respiration.
This loss of mass would be observed even when the organisms are kept in the dark for 24 hours without being provided with nutrients, as their cells continue to perform cellular respiration to maintain basic life functions.
The other options can be ruled out for the following reasons:
(A) Water loss due to evaporation would not apply to all the organisms mentioned, especially the submerged aquatic plant and sea anemone, as they are in a water-filled environment.
(C) The law of conservation of matter states that matter cannot be created or destroyed, only converted from one form to another. While it is a fundamental principle in science, it does not specifically explain the observed pattern of change in mass in this scenario.
(D) Growth and reproduction could potentially cause an increase in mass, but since the organisms were not provided with nutrients during the 24-hour period, it is unlikely that they experienced significant growth or reproduction.
In conclusion, cellular respiration is the best explanation for the observed changes in the mass of organisms over a 24-hour period without nutrients.
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the ability to predict the consequence of an action is located in the group of answer choices gustatory cortex. olfactory receptors. left cerebral hemisphere. prefrontal cortex. right cerebral hemisphere.
The prefrontal cortex is where one can forecast how an action will have an effect.
What area of the brain is in charge of anticipating the outcomes of events or actions?A wide range of executive processes are supported by the prefrontal cortex, including: concentrating one's thoughts. anticipating environmental events and anticipating the results of one's actions.
Which region of the brain is in charge of consciousness?The main component of the forebrain, the cerebrum, is the brain (or prosencephalon). The cerebral cortex, which is its dominant outer region, processes sensory and motor information as well as enabling consciousness, or our capacity to think about ourselves and the outside world.
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why should adjatives like height size and color be avoided when discribing the traits of an organism
Adjectives like height, size, and color should not be entirely avoided when describing the traits of an organism. However, it's essential to recognize that these characteristics are not the only defining traits of an organism and may not be the most relevant or useful in all contexts.
For example, when describing a living organism, it is crucial to consider other traits such as behavior, habitat, diet, reproduction, and other characteristics that help define the species and its ecological niche. Focusing solely on physical characteristics like height, size, and color may provide only a limited perspective on the organism and its place in the ecosystem.
Additionally, overemphasizing certain physical characteristics like height, size, or color may perpetuate stereotypes or biases that are not based on scientific evidence. Therefore, it's important to use a balanced approach when describing an organism and to recognize that all traits are essential in defining a species and understanding its role in the environment.
angiosperms owe their widespread distribution to their production of pollen seeds and flowers. what is the greatest advantange to the production of flowers
The most significant advantage of producing flowers is that they can reproduce quickly and effectively. As well as spread their pollen across large distances.
Flowers are a type of modified shoot that contain reproductive organs, and their bright colors and nectar attract pollinators like bees, butterflies, and hummingbirds. The pollen is transferred from one flower to another, leading to cross-pollination and gene exchange, which helps the plant species to adapt to new environments and survive in diverse climates. Flowers also help protect the reproductive organs from dehydration, heat, and other environmental stresses. In addition, the production of flowers provides food sources for many species of animals, further aiding in the dispersal of the plant's genetic material.
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in the disc-diffusion assay, a large zone of inhibition around a disk to which a chemical antiseptic/disinfectant has been applied indicates of the test microbe to the chemical antiseptic/disinfectant.
In the disc-diffusion assay, a large zone of inhibition around a disk to which a chemical antiseptic/disinfectant has been applied indicates high susceptibility of the test microbe to the chemical antiseptic/disinfectant.
A large zone of inhibition indicates that the test microbe is sensitive to the chemical antiseptic/disinfectant. In the disc-diffusion assay, antimicrobial agents are tested on a culture of microorganisms to determine their susceptibility. Paper disks containing antimicrobial agents are placed on an agar plate containing the microorganisms, and the antimicrobial agent diffuses through the agar. If the antimicrobial agent is effective against the microorganisms, it will create a zone of inhibition around the disk where the microorganisms cannot grow. The size of the zone of inhibition indicates the degree of susceptibility of the microorganisms to the antimicrobial agent.
Therefore, in the disc-diffusion assay, a large zone of inhibition around a disk to which a chemical antiseptic/disinfectant has been applied indicates that the test microbe is sensitive to the chemical antiseptic/disinfectant.
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A scientist is trying to determine if a nucleic acid is RNA. What features should the molecule have?
Select all that apply.
the sugar deoxyribose
the base thymine
a single strand
the sugar ribose
describe the different mechanisms (e.g., reuptake, enzymatic breakdown, diffusion) by which neurotransmitter activity at a synapse can be terminated.
Neurotransmitter activity at a synapse can be terminated by three main mechanisms: reuptake, enzymatic breakdown, and diffusion.
Reuptake is when neurotransmitters are taken back into the presynaptic neuron, while enzymatic breakdown is when enzymes break down neurotransmitters into smaller molecules. Diffusion is when neurotransmitters move away from the synapse, which causes the neurotransmitter concentration to decrease.
Reuptake is a process by which the neurotransmitter is taken back into the presynaptic neuron and broken down, either for reuse or for storage. This process is known as active reuptake and is very efficient in preventing the build-up of neurotransmitters in the synapse.
Enzymatic breakdown is when enzymes break down neurotransmitters into smaller molecules, and this process can occur both within and outside of the synapse.
Finally, diffusion is the process by which neurotransmitters move away from the synapse and the concentration of neurotransmitter decreases over time. This process is known as passive diffusion and is the most common way neurotransmitter activity is terminated at the synapse.
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what is the function of cilia located in the trachea that is lined with pseudostratified ciliated columnar epithelium?
The function of cilia located in the trachea is to move mucus, dirt, and other small particles out of the respiratory tract.
The trachea, also known as the windpipe, is lined with pseudostratified ciliated columnar epithelium that plays a critical role in the respiratory system. The cilia present in the trachea are hair-like projections that protrude from the cells of the pseudostratified ciliated columnar epithelium. These cilia are extremely essential in trapping harmful particles and expelling them out of the body.
When we inhale, particles that get into the respiratory tract stick to the mucus that covers the trachea lining. The cilia then begin to move in coordinated, wave-like patterns to push the mucus and trapped particles out of the trachea and into the pharynx. From there, the mucus can be swallowed or coughed up. This process helps protect the lungs from harmful particles such as bacteria, viruses, and dust.
In summary, the function of cilia located in the trachea that is lined with pseudostratified ciliated columnar epithelium is to keep the respiratory tract free from unwanted foreign particles.
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How are dermal tissues in plants and epithelial tissues in animals similar?
Choose the correct answer.
a. They offer protection.
b. They produce movement.
c. They function as a messaging system.
d. They support and connect parts of the organism.
The correct answer is A. Dermal tissues in plants and epithelial tissues in animals are both similar in that they offer protection.
Dermal tissues in plants form a protective layer that covers the plant's exterior surface, protecting it from environmental stresses, physical damage, and water loss. Similarly, epithelial tissues in animals form a protective barrier that lines the body's surface, protecting it from harmful external agents such as pathogens and chemicals.
While both types of tissues serve different functions in their respective organisms, they share the common function of offering protection. Other functions of dermal tissues in plants include regulation of gas exchange and absorption of water and nutrients from the environment, while epithelial tissues in animals also participate in sensory perception and secretion of substances such as hormones and enzymes.
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if the diploid number of chromoes for an organism is 52 wat will the halpoid numbner of chromones be?
The haploid number of chromosomes for an organism with a diploid number of chromosomes of 52 is 26.
What are haploid and diploid cells?The haploid cell is a cell that contains a single set of chromosomes, whereas the diploid cell is a cell that contains two sets of chromosomes. Each parent contributes one set of chromosomes in diploid cells. In diploid cells, one set of chromosomes is derived from each parent. A haploid cell, on the other hand, contains only one set of chromosomes. When a haploid cell from the father combines with a haploid cell from the mother during fertilization, a diploid cell is formed.
What is the significance of haploid and diploid cells?The formation of gametes is a significant role in haploid cells, while the formation of somatic cells is a significant role in diploid cells. Gametes, such as egg and sperm cells, are formed as a result of meiosis in diploid cells. The haploid cells combine during fertilization to form a zygote. The zygote, in turn, develops into a diploid cell.
What is the haploid number of chromosomes?The haploid number of chromosomes, abbreviated n, is the number of chromosomes in a gamete cell. A haploid number of chromosomes varies from one organism to another. For example, the haploid number of chromosomes in humans is 23. In contrast, the diploid number of chromosomes in humans is 46. In humans, a haploid sperm cell and a haploid egg cell combine to form a diploid zygote during fertilization.
Therefore, the haploid number of chromosomes for an organism with a diploid number of chromosomes of 52 is 26. Each of the organism's gametes will contain 26 chromosomes, which will combine during fertilization to form a diploid zygote with 52 chromosomes.
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in addition to thermoregulation, which of these set points does the human body also work to maintain?
The correct option is E, in addition to thermoregulation, these set points the human body also work to maintain are Blood glucose and blood pH
The human body is a complex organism made up of different systems that work together to maintain homeostasis or a stable internal environment. The skeletal system provides structure and support, while the muscular system enables movement. The cardiovascular system circulates blood throughout the body, delivering oxygen and nutrients to cells and removing waste products.
The respiratory system enables the exchange of gases between the body and the environment. The digestive system breaks down food and absorbs nutrients, while the excretory system eliminates waste products. The nervous system controls and coordinates bodily functions, while the endocrine system regulates hormones and metabolism. The immune system defends against pathogens and foreign substances. Reproductive systems enable the production of offspring. The human body is an intricate and fascinating organism, and understanding its functions is crucial for maintaining health and well-being.
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Complete Question:
In addition to thermoregulation, the human body also works to maintain which of these set points?
A). blood pH and energy level
B). blood glucose and blood clotting
C). blood clotting and energy level
D). energy level and blood pH
E). blood glucose and blood pH
which describes the mating of organisms that have different homozygous alleles for a single trait?monohybrid crossdihybrid crosshomozygous crossheterozygous cross
Answer:
The term which describes the mating of organisms that have different homozogous alleles for a single trait is monohybrid cross. The 'mono' refers to the singular trait while 'hybrid' refers to the crossing of two different parents. Monohybrid cross yields off springs that have one dominant and one recessive allele for that particular gene in question.
a species with low survival when young and high survival when old will have which type of survivorship curve?
The species in question will have a Type III survivorship curve. This type of curve is characterized by high mortality at the young age classes, low mortality rates among individuals who reach maturity, and a gradual increase in mortality as the organisms age.
This type of curve is common in species with short life spans, such as invertebrates, and is due to a combination of high reproductive output and survival strategies that reduce the risk of mortality at maturity. In general, organisms with this type of curve produce large numbers of offspring, but only a few of them survive to reach maturity.
In terms of the species in question, it is likely that the organisms have adapted to survive in hostile environments or conditions in which only a few individuals will reach adulthood. These adaptive strategies may include behaviors such as avoiding predation, finding adequate food and shelter.
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describe how the chromosomes line up differently during metaphase in mitosis and meiosis i (first division of meiosis). remember that to state how they differ, you need to describe both!
The difference between metaphase in mitosis and meiosis is that in mitosis, chromosomes line up in a single file at the metaphase plate. While in meiosis I, homologous chromosomes line up in pairs at the metaphase plate.
Metaphase is a stage in cell division where chromosomes are lined up in the center of the cell. However, there are differences in how chromosomes line up during metaphase in mitosis and meiosis I. In mitosis, the chromosomes line up in a single file at the equator of the cell during metaphase. They are lined up in a single row, which is called the metaphase plate. In meiosis I, the chromosomes are lined up as homologous pairs, rather than in a single row like in mitosis. Homologous chromosomes line up in pairs at the metaphase plate.
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what cellular machinery is involved in translation? select the two answers that are correct. mitochondria mrna nucleus ribosome cell membrane
The cellular machinery that is involved in translation includes the ribosome and mRNA. The correct option is b and d.
What is Translation?Translation is the mechanism by which genetic information contained in an mRNA molecule is decoded by the ribosome to produce a protein chain. In prokaryotes, transcription and translation occur in the cytoplasm simultaneously since the mRNA produced in transcription is promptly used as a template for protein synthesis.
Selecting the Right Answers
Two of the five options given are right answers for this question, which asks about the cellular machinery that is involved in translation. The two right answers are ribosome and mRNA.RibosomesRibosomes are RNA-protein complexes that are in charge of producing proteins. Ribosomes consist of two subunits that are distinct in their composition and are assembled in the nucleolus. The ribosome subunits are transported into the cytoplasm, where they engage with mRNA to initiate protein synthesis. The ribosome's function is to read the mRNA transcript in the 5' to 3' direction and then create a complementary polypeptide chain.
Messenger RNA (mRNA)Messenger RNA is a form of RNA that is transcribed from DNA in the nucleus and functions as a template for protein synthesis. RNA polymerase reads the DNA template and synthesizes a complimentary mRNA transcript. Once the mRNA is transcribed, it is processed and transported to the cytoplasm, where it binds to the ribosome to begin translation. mRNA serves as a blueprint for protein synthesis and determines the sequence of amino acids that will make up the polypeptide chain.
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which substance is a reactant in photosynthesis?
Answer: water
Explanation: