Answer: a) The environment.
Explanation: Natural selection is one of the forces of evolution. Natural selection occurs when individuals in a population have a different reproductive success in certain environment. For example, imagine a mosquitoes population in a insecticide-free envrionment, the non-resistent mosquitoes will be more succesfull that the resistant ones. But when there's insecticide in the environment, the resistent mosquitoes will be more successfull that the non-resistent ones, because they die.
If mine workers were trapped in a mine and it took several days for a rescue team to reach them, thenutrient that they would need most in order to survive isa. protein.
b. carbohydrates.
c. water.
d. vitamins
Answer: Water
Explanation:
The water is the most important components for the survival of human beings or any other organism.
In order to maintain a healthy body as well as survive in a critical situation. Only a small percentage of water loss from the body.
Water transports all the essential nutrients from one place to another place inside the body.
So, the workers in the mine will require water to survive in such stress conditions.
Dr. Williams is a psychologist who believes that motivation is produced when we feel an uncomfortable internal state that pushes us to find a way to feel better.Dr. Williams’ belief is most compatible with which theory of motivation?
a) incentive theories of motivation
b) Maslow's hierarchy of needs
c) drive-reduction theory
d) instinct theory
Answer:
The correct answer is option c) "drive-reduction theory".
Explanation:
The drive-reduction theory states that the motivation originates as a response to biological needs or a driver. This theory supports that motivation originates as an external desire to satisfy an emotional or physical deficiency. The statements of the drive-reduction theory are compatible with what the psychologist Dr. Williams believes about motivation. Dr. Williams believes that motivation is produced by an uncomfortable internal state, such as the drive-reduction theory, which states that motivation is produced as a desire to satisfy a deficiency.
Consider an interdisciplinary study that is aimed at understanding how ocean currents affect the distribution of coral larvae. What two disciplines of oceanography would the researchers be focused on?Biological and physical oceanography
Answer:
Biological and physical oceanography
Explanation:
Physical oceanography is the branch of oceanography that studies the physical processes in the oceans and their relationships, not only with the atmosphere, but also with the lithosphere. Physical oceanography deals with the characteristics of water bodies and researches phenomena such as: marine currents, tides, waves, vortices and others. On the other hand, biological oceanography studies the biota and ecology of the oceans, seeking to understand the biological mechanisms that work in the oceans. Biological oceanography differs from marine biology in that it studies marine organisms with a greener approach to ocean physics, chemistry and geology.
With the union of physical and chemical oceanography, it is possible to establish studies that aim to understand how ocean currents affect the distribution of coral larvae, for exemple.
Which of the following is NOT a general characteristic of the fat-soluble vitamins?
a. Excesses are eliminated from the kidneys.
b. Absorption is via the lymphatic circulation.
c. Several of them require protein carriers for transport.
d. They can be stored in relatively large amounts in certain body tissues
Answer: a. Excesses are eliminated from the kidneys.
Explanation:
A fat-soluble vitamin can be dissolved in fats and oils. They are absorbed along with fats in the diet from the intestinal lumen using the same mechanisms used for absorption of lipids. Upon absorption, these vitamins enter the lymph vessels before making they go into the bloodstream. In most cases, fat-soluble vitamins must be coupled with a protein in order to be transported through the organism. This means they are solubilized and transported by carrier proteins to exert their actions.
By last, since fat-soluble vitamins can not be dissolved in water, they are not readily excreted. So they can accumulate in fatty tissues to toxic levels if taken in excess.
The characteristic not true for fat-soluble vitamins is that their excesses are eliminated from the kidneys. Fat-soluble vitamins are typically stored in the liver and fat tissues, and aren't actively eliminated by the kidneys.
Explanation:The characteristic that is NOT true about fat-soluble vitamins is a. Excesses are eliminated from the kidneys. Fat-soluble vitamins, which include vitamins A, D, E, and K, are not typically eliminated by the kidneys. Instead, excess amounts of these vitamins are stored in the liver and fat tissues, which can sometimes lead to toxicity when consumed in large amounts. Therefore, kidneys do not generally actively elminate excess amounts of fat-soluble vitamins from the body.
On the other hand, b. Absorption is via the lymphatic circulation, c. Several of them require protein carriers for transport, and d. They can be stored in relatively large amounts in certain body tissues are all correct characteristics of fat-soluble vitamins. They do get absorbed via the lymphatic system, many do indeed require protein carriers, and they can be stored in significant amounts in certain body tissues, such as the liver and adipose tissue.
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John is a veteran who suffered traumatic brain damage while in combat. Despite having all of his limbs and suffering no other health symptoms, he experiences phantom pain in his extremities. What could be going on with his brain?
Answer:
He could be suffering with brain damage in his frontal area, it has symptoms of migraine, fluids excreting from his nasal areas and dizziness.
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John's phantom pain in his extremities, despite no physical injury, is most likely caused by disruptions in his brain's interpretation of sensory signals as a result of his traumatic brain injury. The conflicting information from the sensory areas and motor areas in his brain can create a perception of pain, known as phantom limb pain.
Explanation:John's symptoms can be attributed to a phenomenon known as phantom limb pain, which is frequently experienced by individuals who have lost a limb or suffer from neurological damage. Despite the limb being physically present, John's traumatic brain injury may have caused disruptions in the way his brain interprets sensory signals, leading to the sensation of pain in a limb that is otherwise perfectly healthy. The sensory areas and the motor areas in the brain, in such cases, can sometimes send conflicting information, causing a perception of pain. For instance, the motor cortex in John's brain might still be sending out commands for the limb to move, but the absence of corresponding feedback from the sensory cortex could result in the experience of phantom pain.
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Question 17
Metal ions in water can react with soap to form ____.
A)acid-base indicators
B)detergents
C)salts
D)soap
Answer:
Metal ions in water can react with soap to form salts. ( option C)
Explanation:
Soaps have the general formula (RCO2−)nMn+ (Where R is an alkyl, M is a metal and n is the charge of the cation).
C17H35COO- Na+
The class of soaps is determined by the identity of Mn+. Those can be mettalic or lithium soaps.
Let's consider those metals are calcium or magnesium ions, dissolved, with soap, in the water, we'll find that the sodium ion (Na+) at the polar end of the soap molecule is replaced by a metal ion such as calcium or magnesium ion. This will result in a salt, ( better said an insoluble fatty acid) salt.
This can be shown with the following reaction:
2 C17H35COO- Na+ + Ca2+ → (C17H35COO)2Ca + 2Na+
This results in Calcium stearate, which is the calciumcarboxylate (calcium salt) of stearic acid.
Metal ions in water can react with soap to form salts.
Answer:salt
Explanation:
Hot springs in Yellowstone National Park can reach 205 degrees Fahrenheit (96 degrees Celsius), a temperature at which few organisms can survive. Organisms called thermophiles, however, thrive at this temperature and produce the bright color of the park's Grand Prismatic Spring. Which statement is a testable hypothesis to explain how thermophiles can grow at such a high temperature?
Thermophiles were created to live at high temperature.
Thermophiles obtain energy from high temperature environments.
Thermophiles have heat-resistant enzymes.
Thermophiles have been found in many high temperature environments.
The testable hypothesis explaining how thermophiles can grow in high-temperature environments like Yellowstone's hot springs is that they possess heat-resistant enzymes. This hypothesis is specifically testable by comparing the functionality of these enzymes at high temperatures to that of enzymes from non-thermophilic organisms.
Explanation:The question posed is about how thermophiles can thrive in the extremely high temperatures found in hot springs, such as those in Yellowstone National Park. Organisms like thermophiles that can grow at temperatures near or above 100°C are fascinating subjects of study due to their unique adaptations that allow them to survive in conditions that are lethal to most life forms. Among the given statements, the one that serves as a testable hypothesis to explain how thermophiles can grow at such high temperatures is that thermophiles have heat-resistant enzymes.
This hypothesis is testable because it proposes a specific biological mechanism - the presence of heat-resistant enzymes - that allows these organisms to function in high-temperature environments. Researchers can experimentally assess the functionality of these enzymes at high temperatures, comparing them with enzymes from non-thermophilic organisms to see if they indeed retain functionality where others do not. This contrasts with statements about the creation or energy sources of thermophiles, which are less directly testable and relate less specifically to the physiological adaptations that enable survival at high temperatures.
The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. This in turn led to the change in diet that included larger amounts of protein. Many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. This demonstrates the intimate connection between:
a. evolution and technology b. nature and nurture
c. culture and environment d. biology and psychology
Answer:
nature and nurture
Explanation:
According to my research on studies conducted by anthropologists, I can say that based on the information provided within the question this demonstrates the intimate connection between nature and nurture. This can be said because in the question it illustrates how the advanced ability to hunt animals (nature) was a main aspect of our change in diet and ability to adapt rapidly (nurture).
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Question 18
Blood contains ____ that allow small amounts of acids or bases to be absorbed without harmful effects.
A)esters
B)buffers
C)enzymes
D)precipitates
Answer:
I do believe the answer to be; Buffers
Answer:
Blood contains buffers that allow small amounts of acids or bases to be absorbed without harmful effects. Hence the answer is option B.
Explanation:
The blood of human is of red color because of presence of hemoglobin in 8th which provides red color to it. Iron is considered to be as rich source of hemoglobin so it is advised to take iron when hemoglobin is not present in proper amount in the body.
Hemoglobin is also responsible for the carrying of oxygen throughout the body and carrying back of carbon dioxide from the whole body to the lungs.
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Why are the gas planets also known as Jovian planets? :))
Answer: because they're bigger planets
Explanation:
They have a larger mass so therefore they're called jovian GIANTS
Though many are apt to believe that the bones from a recent discovery are those of a direct ancestor of modern humans, some scientists are skeptical, and contend that the remains, while suggesting a common ancestor, are but a vestige of one of evolution's many______ experiments.A. nobleB. unviableC. intuitiveD. unsuccessfulE. archaicF. ingenious
Answer:
Answered
Explanation:
Though many are apt to believe that the bones from a recent discovery are those of a direct ancestor of modern humans, some scientists are skeptical, and contend that the remains, while suggesting a common ancestor, are but a vestige of one of evolution's many_ unsuccessful._____ experiments.
On looking at the keyword vestige which means remains. If something is in remains of something and it is evolution, then that thing must have been unsuccessful. Rest all options look absurd with context of the question.
Dr. Kavanaugh has noticed that many of her students are having difficulties understanding the basic parts of a nerve cell (neuron) but don’t seem to have the same problems understanding most of the different regions of the brain. Dr. Kavanaugh wonders if her lectures have some bearing on this situation, and has posed a question she intends to purse in her research—whether the ways in which information is presented affects student interest and memory of the material. If she is interested in pursuing this research question further, Dr. Kavanaugh’s next step in the scientific method would be
Answer:
Hypothesis
Explanation:
Since the problem of the research has been already defined, the next step is to formulate a hypothesis.
This is a clear statement highlighting the main idea or purpose of the scientific research. In this case our hypothesis could be:
The way in which information is presented affects student interest and memory of the material.
During _____, the genital areas become engorged with blood, a woman's vagina expands and secretes lubricant, and her breasts and nipples may enlarge
Answer:
excitement phase
Explanation:
Answer: during the was itchiness
Explanation:
_________ tissue can tolerate the amount of pressure exerted by a hemostat or low-compression biting instruments such as an Allis and it tends to heal rapidly unless diseased or infected.
Answer:
Elastic tissue.
Explanation:
Tissue may be defined as the group of similar cells that perform the specific functions of the body. Different type of tissue are elastic tissue, fibrous tissue, connective tissue, muscle tissue and many more.
Elastic tissue has the ability to tolerate the variable amount of pressure. This tissue can heal easily if infected during the disease. Elastic fibers are present in the elastic tissue. This tissue is present in heart walls, tendons and ligaments.
Thus, the answer is elastic tissue.
Carl Woese proposed the domain classification a. to account for two major and distinct prokaryotic groups in addition to eukaryotes. b. to replace kingdoms. c. to divide the single-celled organisms from the multicellular organisms. d. using shape to classify microbial species.
Answer:
a. to account for two major and distinct prokaryotic groups in addition to eukaryotes.
Explanation:
The system of Five Kingdoms was accepted because all the living things are classified in this model. Based on the fundamental characteristics, prokaryotes are included in one kingdom and the four kingdoms of eukaryotic organisms (protists, fungi, plants and animals). In the late 1970s, Carl Woese and his colleagues found that there were two separate groups of prokaryotes based on DNA sequences of different prokaryotes. Due to the vast difference in genetic structure makeup, Carl Woese proposed that all the organisms be divided into three domains: Eukaryota, Eubacteria, and Archaebacteria.
What is the final stage of cellular respiration?
Answer:
The electron transport chain.
Explanation:
Penn Foster
Which of the following classes of macromolecules always contains a carbohydrate portion? View Available Hint(s) Which of the following classes of macromolecules always contains a carbohydrate portion? Nucleic acids Water Proteins Lipids Submit
Answer:
Nucleic acids
Explanation:
Remember these long strands could be the ADN or the RNA, in both cases, they are formed by nucleotids, that means a complex of three parts.
A nucleotid is conformed by:
a) a nitrogenous base that in the case of DNA could be Adenine (A), Guanine (G) , citocine (C) o thymine (T). In the case of ARN are almost the same, the difference is instead of having Thymine, it will have uracile (U).
b) a phosphate group
c) a carbohydrate, in the case of ADN it will be Dexosyrribose and in the case of ARN will be ribose sugar.
A protein molecule that acts as a catalyst in living organisms is called a(n) _____. amino acids catalyst enzyme
Your answer should be enzymes.
[HELP ASAP]
Which of the following is not normally a function of proteins in healthy cells?
a. function as enzymes
b. cell messaging
c. long term energy storage
b. Cell messaging or cell signaling is not normally a function of proteins in healthy cells.
Explanation:Cell messaging is the communication process between the cells that govern the activities of cells and synchronizes multi-cellular actions and activities. The three stages of cell messaging is reception, transduction, and response.
Proteins are frequently known as the building block of life and come in a wide range of sizes and shapes. There is a wide range of kinds of proteins in our bodies. They all serve significant jobs in our development, growth and daily functioning.
Summer squash plants with the dominant allele C bear white fruit, whereas plants homozygous for the recessive allele c bear colored fruit. When the fruit is colored, the dominant allele G causes it to be yellow; in the absence of this allele (that is, with genotype gg), the fruit color is green. What are the phenotypes and proportions expected from intercrossing the progeny of CC GG and cc gg plants? Assume that the C and G genes assort independently.
Answer:
12 white: 3 Yellow: 1 Green
Explanation:
Fruit color inheritance in Summer Squash is an example of dominant epistasis wherein a dominant allele masks the expression of both dominant and recessive alleles present at some other locus.
Here, the allele "C" is epistatic to G and g alleles and masks their expression. Hence, the F2 progeny with genotypes C-G- and C-gg bear white fruits. In absence of dominant allele "C", the genotype "cc-G-" gives yellow fruit color while the genotype "ccgg" imparts green fruit color.
Therefore, the F2 progeny obtained from crossing the F1 dihybrid from the parents "CCGG" and "ccgg" exhibits the following phenotype ratio=
12 white : 3 yellow: 1 green
How does auxin produce gravitropism in a plant that is placed on its side? How does auxin produce gravitropism in a plant that is placed on its side?
Answer: Auxin accumulates on the lower side of the roots and inhibits the elongation of cells in that region.
Explanation:
Auxin is a type of growth hormone that helps in the growth and development of the plant.
When a stem is placed horizontally, then the bottom part of the plants contains more auxin and it grows more.
The auxin accumulates on the lower side of the roots and inhibits the elongation of cells in that region.
Scientists have recently discovered two multicellular organisms with different components in their cell walls. The cell walls have two different polysaccharides, cellulose and chitin. In which two kingdoms would these two multicellular organisms be grouped?
Answer:
Fungi's are multicellular organisms and contain chitian in there cell walls and plants which belong to the plantae kingdom are also multicellular but they have cellulose in the cell walls.
Which statement concerning grafting is correct? Stocks and scions refer to twigs of different species. Stocks provide root systems for grafting. Grafting creates new species. Stocks and scions must come from unrelated species.
Answer:
Stocks provide root systems for grafting
Explanation:
When the tissues of plants are joined together to let them continue their growth together as one, then such a practice is known as grafting.Grafting is commonly practiced in horticulture and agriculture for the growth of commercially important plants in an asexual manner.In the process of grafting, the upper part of the combined plant is known as scion and the lower part is known as the stock. The stock is selected for its root system whereas the scion is selected for its flowers, leaves or stem. The success of the graft depends on the joining of the vascular tissues of the stock and scion so that the plant grows together as one.The correct statement is that stocks provide root systems for grafting. Stocks support plants by offering water and nutrients, while scions develop the desired plant variety. Option B is correct .
Grafting is an artificial method of asexual reproduction used to combine favorable stem characteristics with favorable root characteristics. In grafting, the plant providing the root system is called the stock, and the plant part that is grafted onto it is known as the scion.
These two components are essential for creating a successful graft, and they must be closely joined so that their vascular systems can fuse.
"Stocks provide root systems for grafting." This means that the stock supports the plant by providing water and nutrients from the roots, while the scion grows into the desired variety of the plant.
Complete question :
Which statement concerning grafting is correct?
A. Stocks and scions refer to twigs of different species.
B. Stocks provide root systems for grafting.
C. Grafting creates new species.
D. Stocks and scions must come from unrelated species.
Drug manufacturer has recommended a drug dose of 10 mg per square meter of body surface area (bsa). What is the required dose of the drug for a child who has a psa of 1.2 square meters
Answer:
12 mg
Explanation:
The given says it is 10 mg per square meter. If the child is 1.2 square meters, you can solve this by merely multiplying the two figures.
10 x 1.2 = 12 mg
If you want to see how the units cancel out, you can do this also:
[tex]1.2 m^2 \times \dfrac{10mg}{m^{2}} = 1.2 \times 10mg = 12 mg[/tex]
Added info!
Drug dose needs to be very specific and also needs to be appropriate for the bsa or weight of the patient. Some drugs can have very strong reactions and an overdose can be deadly. On the other hand, if you give them less than what is required, it may not be effective anymore.
The advised dosage for this child, with a body surface area of 1.2 square meters and a recommended drug dose of 10 mg per square meter, is 12 mg. Dosage and route of administration are crucial factors in ensuring effective treatment without adverse side effects.
Explanation:In the given scenario, the drug dosage recommended by the manufacturer is 10 mg per square meter of body surface area (bsa). Given that the body surface area (bsa) of the child is 1.2 square meters, the required dose for the child can be calculated by merely multiplying the recommended dosage per square meter with the child's body surface area. Thus, the required dose for the child would be 10 mg x 1.2 = 12 mg.
ZThe dosage and route of administration are vital to ensure that therapeutic drug levels are achieved without causing significant toxicity or side effects. For children, doses are often based on the patient's mass or body surface area. Adult bodies, with their great variability, have led to debates about whether mass should be considered for all patients when determining the appropriate dosage. Patients with liver or kidney dysfunction might exhibit reduced drug metabolism, leading to increased drug levels, toxicity, and propensity for side effects.
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Which of the following is a difference between antiseptics and antibiotics?A. Antiseptics kill microbial cells but antibiotics do not.B. Antibiotics kill microbial cells but antiseptics do not.C. Antiseptics can be taken internally but antibiotics cannot.D. Antibiotics may be taken internally but antiseptics cannot.
Answer:
D. Antibiotics may be taken internally but antiseptics cannot
Explanation:
An antiseptic is a substance that kills bacteria that applied to live tissue or skin. Soap, Iodine, and medicine alcohol are antiseptics.
Its function is to prevent a wound from infection by not allowing them to grow. You can't take them.
An antibiotic is a substance that came from a living organism that kills and prevents bacteria to grow.
You take them as a medicine.
You have just disembarked from an airplane following a cross-country flight. You are experiencing difficulty in hearing and notice that your ears are blocked. To relieve the pressure, you try yawning to clear the ear canal. It worked. What muscle was involved? a) Middle constrictor b) Levator veli palatini c) Salpingopharyngeus d) Palatopharyngeus e) Tensor veli palatini
Answer:
palatopharyngeolus
Explanation:
because ears are blocked
Palatopharyngeolus is involved.
Steps such as yawning, swallowing or chewing gum usually can counter the differences in air pressure and improve airplane ear symptoms. However, for a severe case of airplane ear, might need to see a doctor.What are muscles?Muscles are soft tissues. Many stretchy fibers make up muscles. A person have more than 600 muscles in body.Different types of muscles have different jobs. Some muscles help run, jump or perform delicate tasks like threading a needle.Hence, D option is correct.
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Which of the following statements is correct? The heart is posterior to the spine. The sternum is posterior to the spine. The heart is dorsal to the sternum. The sternum is dorsal to the spine.
Answer:
The heart is dorsal to the sternum
Explanation:
Dorsal means the back end of something. The sternum is the breast bone on which the ribs are attached. Therefore the heart is behind (dorsal) the chest bone and in front (ventral) to the spine. Dorsal is derived from the Latin word ‘dorsum’ – meaning ‘back’- while ventral is from Latin word ‘venter’ – meaning ‘belly’.
Final answer:
The correct statement is that the heart is dorsal to the sternum. The heart lies behind the sternum, or breastbone, which is at the anterior of the thoracic cage, thus making the sternum anterior to the heart. None of the other statements provided correctly describe the anatomical positions of the heart, sternum, and spine.
Explanation:
The correct statement among the options given is: The heart is dorsal to the sternum. The heart is located within the thoracic cavity, more medially and slightly to the left of the body's midline. The sternum, or breastbone, is found at the anterior of the thoracic cage which includes 12 pairs of ribs and their costal cartilages. It's clear from this anatomical relationship that the sternum is in front of the heart. The heart is said to be dorsal to the sternum because dorsal refers to the back side of the body. Since the terminology is based on anatomical position, the heart is posterior or dorsal to the sternum, even though it is oriented towards the left side of the thoracic cavity.
The sternum is not posterior or dorsal to the spine; rather, the spine is dorsal to the sternum as it is located at the back of the thoracic cage. The terms anterior and posterior are used to indicate positions with respect to the front and back of the body. Similarly, dorsal and ventral refer to the back and front aspects respectively in human anatomy.
A finch population eats seeds that vary in size. There is variation in preference of seed type, and that variation positively correlates with beak size. Currently, stabilizing selection is operating on beak size with little or no directional selection. Suppose more large seeds were to become available. What is a likely result?
Final answer:
Should an abundance of large seeds occur, natural selection would favor finches with larger beaks, potentially leading to an evolutionary increase in beak size. Past events studied by the Grants on the Galápagos illustrate this process, where drought conditions led to an increase in the average beak size due to the survival advantage of larger-beaked finches.
Explanation:
When more large seeds become available in the finch population, natural selection will favor birds with larger beaks that can crack open and eat these seeds. Over time, this is likely to result in a higher percentage of finches with large, broad beaks because they can feed more efficiently on the newly abundant food source. This phenomenon clearly aligns with the Grants' observations on the Galápagos finches, specifically with the medium ground finches on Daphne Major, where shifts in seed availability caused by environmental changes led to the evolution of beak sizes.
Due to a drought in 1977, natural selection favored large-billed finches as the availability of small, soft seeds decreased. Consequently, birds with larger beaks had better survival and reproduction rates, causing an increase in the average beak size in the subsequent generation. This demonstrated evolution through changes in beak sizes responding to environmental pressures. If large seeds continue to be readily available, it's reasonable to expect ongoing directional selection towards larger beaks, shifting the population's mean beak depth.
Stabilizing selection is a type of natural selection where genetic diversity decreases as the population stabilizes around a particular trait value, in this case, a specific beak size. However, if the environment changes and large seeds become more common, this could alter the selection pressure from stabilizing to directional, favoring those with traits better suited for the new conditions, thus potentially leading to an evolutionary shift towards larger beak sizes.
nucleotide are composed of phosphate group, a sugar , and a nitrogenous base. DNA is made up of long strands of nucleotide. which part if the above molecule can differ between nucleotide?
A.the sugar
B. the phosphate group
C.the nitrogen group
D. there is no differing structure in nucleotide
Option C is the correct answer. Nitrogenous base is the molecule that differ between nucleotide.
Nucleotide:
In DNA all sugars are deoxyribose sugar. In Phosphate and sugar bond together and form DNA backbone.This backbone is same among nucleotide.There are 4 nitrogenous bases which differ among nucleotide.From the above discussion, Option A, B, and D is incorrect.
So, we can conclude that Nitrogenous base is the molecule that differ between nucleotide.
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Out of these components, the nitrogenous group is the part that can differ between nucleotides. Option C is correct.
One of the four nitrogenous bases that can be present in DNA nucleotides is adenine (A), thymine (T), cytosine (C), or guanine (G).
In the double helix structure of DNA, these bases specifically pair through hydrogen bonding (A pairs with T, and C pairs with G).
Components of a Nucleotide
Nitrogenous Base: This can be one of four types in DNA – adenine, thymine, cytosine, or guanine.Sugar: In DNA, the sugar is deoxyribose.Phosphate Group: This remains consistent among all nucleotides, helping to form the backbone of the DNA strand.The rate and depth of breathing influences the blood levels of oxygen (O2), carbon dioxide (CO2), hydrogen ions (H+), and also influences the venous return of blood and lymph due to changes in compression within the thoracic cavity that occur during breathing.
a) True
b) False
Answer:
True
Explanation:
True ,the rate and depth of breathing influences the blood levels of oxygen (O2), carbon dioxide (CO2), hydrogen ions (H+). Slow and deep breathing increase the blood oxygen level and cellular breathing is great,whereas the CO2 level reduces in the blood and it impedes lactic acid formation. Moreover, influences the venous return of blood and lymph due to changes in compression within the thoracic cavity that occur during breathing.