What pituitary hormone works at the level of the collecting duct to either increase or decrease absorption of water in order to maintain plasma volume and thus blood pressure?

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Answer 1

Antidiuretic hormone (vasopressin) works at the level of the collecting duct to either increase absorption of water in order to maintain plasma volume and thus blood pressure. This hormone is synthesized by special nerve cells of the hypothalamus and then transported to the pituitary gland where the hormone is released from vesicles into the bloodstream. Vasopressin is released in response to extracellular fluid hypertonicity. His functions are to reabsorb water back into the circulation, from the filtrate in the kidney tubules of the nephrons and to constricts arterioles (raises arterial blood pressure).

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PLEASE HELP! ILL GIVE YOU A MEDAL AND FAN YOU!

what is a cladogram? please explain why a scientist would use DNA or protein sequences taken from three different organisms to construct and cladogram,

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A cladogram is a type of graph that shows how closely related different types of organisms are in an evolutionary context. It resembles a tree, with various organisms being placed at the end of each branch. If two organisms have a close common branch, they are more closely related than those who have more distant branches. Since DNA, or corresponding protein sequences are more similar in closely related species, and more different in more distant species, a biologist can use those sequences to numerically determine how closely related three species are.

some leaves modify into spines, how does this modification help plants survive?

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Spines primarily have a protective function in plants. The spines can be sharp, and form a physical barrier against herbivores which may want to feed on the plant. Spines however also have other benefits. The spines on a jumping cactus allow segments of the cactus to stick to passing large animals or humans, thereby allowing the cactus to spread to other areas through asexual propagation. Spines are modified leaves, and spines have a much lower surface area than leaves, and therefore can reduce transpirative loss of water by the plant during harsh droughts. Some trees in alpine regions, such as pine trees, have developed spine-like leaves to prevent the accumulation of snow in the branches.

A dna replication bubble forms at a specific sequence of bases called the ___________. see section 15.3 (page 321) .

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The answer is the origin of replication. This is where the replication bubble is formed. Two opposite replication forks (Y-shaped regions) of DNA are formed when the double helix is unzipped by DNA helicases. Transcription factors, polymerase III and primer then bind to the region to begin transcription.

A child that is not stimulated with a normal environment is likely to show ____.

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The child have fewer neural synapses than a stimulated child. In our nervous system, synapses are structures that allows neurons to conduct electrical impulse from each other. Synapses transmits information via electrical or chemical means. In chemical synapses, the electrical activity is converted into the release of neurotransmitter that binds in to the receptors that can be found in the post synaptic membrane.In Electrical impulse, the pre and post synaptic cell membranes are connected by synaptic clefts. This allow the passage of electrical current causing changes in the voltage in the presynaptic cell and induce voltage change in the post synaptic area.

The process of turning molecules that are ingested into forms that are compatible with the organism is _________. (Points : 2)
digestion
absorption
assimilation
circulation

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The correct answer is assimilation. Digestion is breaking down the molecules of food from polymers to monomers, absorption is their cellular intake and circulation is self explanatory.

Assimilation is the process where ingested molecules are turned into forms compatible with the organism, following digestion, absorption, and circulation.

The process of turning molecules that are ingested into forms that are compatible with the organism is called assimilation. After the processes of digestion, absorption, and circulation, assimilation is the final step where food material is appropriated by the cell protoplasm. Digestion involves the mechanical and chemical breakdown of food into smaller molecules through hydrolysis reactions in the mouth, stomach, and small intestine. Once digestion is complete, the nutrients are absorbed, transported by circulation, and finally, they undergo assimilation where they are utilized by the cells for various functions such as energy production, growth, and repair.

A client whose spouse died 2 years ago is brought to the psychiatric unit by a family member, who states that the widowed spouse has no interests, is neglecting personal hygiene, and has become totally isolated. the nurse completes a history and physical examination that verifies the family member's concerns. what is most important for the nurse to explore with the client at this time?

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Whether suicide has been considered recently. The client is depressed; it is important to know whether the client is considering suicide so the nurse can provide a safe environment and related therapeutic care. Concern for the client's safety takes priority at this time over the client's feelings, the underlying cause of the behavior, or the dynamics of the marital relationship.

Intrapleural pressure __________ during expiration.

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Intrapleural pressure is Negative during expiration.

Intrapleural pressure is the air pressure in the pleural cavity and also exists between visceral and parietal pleurae. This pressure majorly depends on ventilation phase, the volume of the intrapleural cavity and atmospheric pressure. During expiration, the Intrapleural pressure in the pleural cavity becomes less negative which is commonly known as negative pressure.

Would a karyotype show an autosomal dominant disorder? Why or why not?

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The answer is NO. Karyotypes visualize the structure of condensed chromosomes in the metaphase stage of mitosis. Karyotype is good at diagnosing disorders related to chromosome changes such as aneuploidy. However, disorders such as autosomal dominant cannot be detected by Karyotype since they are caused by nucleotide mutations that do not affect the structure/conformation of the chromosomes.

The answer is

Explanation:

Karyotype is a good option for the diagnoses of disorders related to chromosome changes such as aneuploidy. But disorders such as autosomal dominant cannot be diagnosed by Karyotype because these disorders are caused by nucleotide mutations which do not affect the structure and shape of the chromosomes.

A scientist wants to prevent a culture of live cells from producing a particular protein. Which of the following will the scientist most likely modify to prevent the production of the protein?

A: the DNA in the nucleus
B: an enzyme in the lysosomes
C: the polysaccharides in the cytoplasm
D: a phospholipid in the plasma membrane

Answers

The answer is the DNA in the nucleus.

A protein is formed by the DNA going through the processes of transcription and translation. All the information needed to produce a specific protein is stored in the DNA region which corresponds to that specific protein. When there is a need for a specific protein, the DNA is transcribed into an RNA strand, and the RNA strand is then translated into a chain of amino acids that form the structure of the protein.

A lysosome is an organelle which contains degradative enzymes and has a role in degrading proteins that have been used, or proteins that are not needed at a specific time. The polysaccharides are a structural part of the cytoplasm and they don't have a big role in the formation of proteins, and phospholipids in the plasma membrane are a structural part that keeps the shape of the membrane and they have a role in the transport of proteins.
So to answer your question, if a scientist were to prevent the production of a specific protein, they would most likely modify the DNA segment in the nucleus of the cell that corresponds to that protein, so that when the cells start to transcribe that part of the DNA, they fail.

What structure is present on the second cervical vertebra (c2 or axis) that allows you to rotate your neck to say "no?" what structure is present on the second cervical vertebra (c2 or axis) that allows you to rotate your neck to say "no?" posterior tubercle transverse ligament body dens (odontoid process)?

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Dens (odontoid process) Hope this helps.

A rabbit taken from a meadow near sea level and moved to a meadow high on a mountainside would have some trouble breathing. why? a rabbit taken from a meadow near sea level and moved to a meadow high on a mountainside would have some trouble breathing. why? the partial pressure of oxygen in the air at high elevations is lower than at sea level. the percentage of oxygen in the air at high elevations is lower than at sea level. the percentage of oxygen in the air at high elevations is higher than at sea level. the partial pressure of oxygen in the air at high elevations is higher than at sea level.

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I think the rabbit would have trouble breathing because the partial pressure of oxygen in the air at high elevation is lower than at sea level. The air pressure at sea level is high and hence there is more oxygen than the mountain side where there is low air pressure. The difference in amount of oxygen is what makes the rabbit not breath well.

The carbon skeletons of which two amino acids directly enter metabolism at the level of pyruvate?

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Alanine and Serine
The degradation of amino acid is to transform the carbon skeleton into metabolic intermediates that can be easily be oxidized by the citric acid cycle or converted into glucose. Both Alanine and serine provide substrate for ketone bodies gluconeogenesis. However, metabolism of alanine yields pyruvate directly by transamination

Which form and method of using cocaine produces the most intense immediate high? page?

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The answer is the smoking of crack cocaine. This drug is more simply known as 'crack', and is widely considered the most addictive form of cocaine. Crack is widely used as a recreational drug, and was first widely used in US cities during the mid 1980s. The term 'crack epidemic' describes the rapid increase in its use and the resulting socio-economic problems that resulted.

What is the most common method of carbon dioxide transport? what is the most common method of carbon dioxide transport? dissolved in the plasma chemically bound to hemoglobin as carbaminohemoglobin chemically bound to hemoglobin as oxyhemoglobin as bicarbonate ions in the plasma?

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The appropriate answer is as a bicarbonate ions in the plasma. Carbon dioxide is transported in the blood from the tissues to the lungs in three different ways. some of it is transported dissolved in the plasma, some is transported as carbaminohemoglobin and other as bound to proteins. However most carbon dioxide is transported as bicarbonate; as blood flows through the tissues, carbon dioxide diffuses into red blood cells, where it is converted into bicarbonate.

Final answer:

The most common method of carbon dioxide transport is as bicarbonate ions in the plasma.

Explanation:

Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate. The majority of carbon dioxide is transported as bicarbonate ions in the plasma.

Learn more about carbon dioxide transport here:

https://brainly.com/question/34190100

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adaptive radiation is also known as

Answers

DIVERGENT EVOLUTION

This is where a species will give rise to many species that will appear different externally but similar internally. In evolutionary biology, this usually happen when there is a change in environment, new sources of food, new predators or challenges for the species. This result into speciation and changes in the phenotype of organism depending on their adaptive trait. This can be morphological or physiological trait of adaptation. There are 4 features for adaptive radiation, common ancestry, pbenotype to environment correlation, trait utility and speciation.

How can humans affect the rate of water erosion?

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by littering and also by fumes from cars and ect.

A _____ is a measure of how much a typical serving size of a particular food raises blood glucose.

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The correct answer is glycemic load.
In particular, glycemic load estimates the amount of carbohydrates in a serving of food and how each gram of these carbohydrates can affect the blood glucose. It is a measure commonly used in weight-loss programmes and in dietary programs used to treat insulin resistance. It has been shown that common spikes of blood glucose and insulin levels, increase the risk for diabetes.

Answer: Glycemic load

This takes into account the amount of carbohydrates present in the food and how much it will raise a person's blood glucose level after eating a typical serving size meal. Glycemic load combines both the quantity and quality of carbohydrates based on the glycemic index where it is calculated by multiplying the grams of available carbohydrate in the food times the food's glycemic index and then dividing by 100. Moreover, it is also used to compare blood glucose values of different types and amounts of foods based on the carbohydrate consumed by an individual.

While reviewing the medical reports in an acute care setting, the nurse finds that the client is at risk for kidney damage and requests the healthcare provider to increase the intravenous fluid rate as a priority nursing intervention. which finding supports the nurse's conclusion?

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The correct answer is the urine output is 25 mL/hr.
The urine output is the amount of urine produced by a person hourly. The normal range for urine output is 800 to 2000 mL per day, meaning that the minimum rate of urine output should be approximately 30 mL/hr. Estimating the urine output can help monitor the kidney function and the levels of the body's hydration. Serious health problems could cause a decreased urine output, such as decreased blood supply to the kidneys or bladder and prostate problems. The patient has lower rate than normal and his/her fluid intake should be increased.

Compared to white smokers, african-american smokers __________.
a. smoke fewer cigarettes, but carry a higher risk of tobacco-related disorders
b. smoke fewer cigarettes and carry a lower risk of tobacco-related disorders
c. smoke more cigarettes and carry a higher risk of tobacco-related disorders
d. smoke more cigarettes, but carry a lower risk of tobacco-related disorders

Answers

The correct answer is that African-Americans smoke fewer cigarettes but still carry a higher risk of tobacco-related disorders. African-Americans are more genetically predisposed to developing squamous cell carcinoma of the lungs as well as adenocarinoma of the lungs even if they do not smoke or if they smoke less. There is also a higher incidence of COPD and emphysema in African-Americans.

African-American smokers generally smoke fewer cigarettes but have a higher risk of tobacco-related disorders compared to white smokers.

Compared to white smokers, African-American smokers smoke fewer cigarettes, but carry a higher risk of tobacco-related disorders. This is attributed to a combination of factors, including the possibility that African American smokers may absorb more nicotine than white smokers, and may also have differences in how their blood vessels react, rendering them more susceptible to hypertension and heart disease. Additionally, there are significant health disparities between racial groups, with African Americans having higher rates of several chronic conditions.

What type of energy is stored in the chemical bonds of a molecule?

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Chemical bonds are how chemical energy is stored. When the bond is broken the energy is released. Potential energy is considered to be stored there because the bond has the potential to release a certain amount of energy for work.

Which ending completes the sentence below? Oxygen is a gas that has _______. A. definite shape and volume B. no definite shape, but has definite volume C. definite shape, but no definite volume D. no definite shape or volume Please Help Asap! Thank You

Answers

I believe the answer you're looking for is D. no definite shape or volume. Hope this helps!

Answer:

d. no definite shape or volume

Explanation:

In the late 1940's, scientists released a group of chemicals, pyrethroids, to help kill insects in auricular crops. By the year 2000, over 100 insect species were resistant to pyrethroids and scientists had to develop a new plan to kill them. Explain what happened genetically in the insect population over time as the insects were exposed to pyrethroids. A) The toxicity of pyrethroids weakened over time. B) The allele for pyrethroid resistance increased throughout the population. Eliminate C) Pyrethroid resistance became the dominant allele in the insect populations. D) Most insects had the allele for pyrethroid resistance, but it remained masked.

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B. the allele for pyrethroid resistance increased throughout the population because variation exists.

Answer: The correct answer is-

B) The allele for pyrethroid resistance increased throughout the population.

As per the information in the question, pyrethroids ( a group of chemicals for killing insects in auricular crops) was given by scientist and more than 100 insect species developed resistance against it by the year 2000.

This indicates that in order to survive, certain species of insects developed resistance ( by changing their genome) and the gene variant ( allele) that was responsible for making them resistant against pyrethroids was increased throughout the population.

Thus, these insect species that developed resistance was selected by nature as it favored their survival.

Due to this, scientist had to develop a new plan to kill them.

Thus, option B) is the right answer.

Is a cells main function is to produce proteins to be excreted, such as on the pancreas, which organelles would you expect to be larger or more prevalent? Why?

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Protein synthesis occurs in the cytoplasm, specifically in the ribosomes. Proteins that are meant to be excreted, such as in the pancreas, are produced in the rough endoplasmic reticulum which is a membrane studded with ribosomes. In organs that primarily function to produce and secrete proteins, there will be a larger rough endoplasmic reticulum with more ribosomes.

Question 12 human beings generally have an aversion to bitter and sour foods. some researchers suggest that this is because foods that are inedible or even poisonous are often bitter or sour. the tendency of human beings to find these potentially harmful foods repulsive is an example of ________.

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The answer is biological preparedness. This is the phenomenon of living things, in this case humans, to associate certain stimuli with a particular response. This phenomenon is also attributed to some phobias in life. It is a case of classical conditioning that improves the chances of survival for humans.

Genetic __________ are organisms that carry more than one genetically distinct population of cells derived from more than one zygote.

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Genetic chimeras, are organisms that carry more than one genetically distinct population of cells derived from more than one zygote.A genetic chimerism is a single organism composed of cells with distinct genotypes. In animals, it means an individual derived from different zygotes, which may include possessing both female and male sex organs, blood cells of two blood types, or subtle variations in form.

Nutrients enter a cell ______ the concentration gradient by the process of _______. @hectoroftroy

A. with; diffusion
B. against; osmosis
C. against; diffusion
D. with; endocytosis

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Nutrients enter a cell with the concentration gradient by the process of diffusion. Diffusion is the movement of the particles or nutrients from the higher concentration to the lower concentration area of the cell. This process is commonly aided by the carrier proteins which help in transporting nutrients.

The answer is A) with; diffusion

the law of segregation tells usb’s that the rearrangement of chromosomes into gametes is

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The law of segregation tells usb's that the rearrangement of chromsomes into gametes is METAPHASE

The type of bone that has irregularly arranged collagen bundles, abundant osteocytes, and little inorganic matrix, is classified a

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That would be the primary bone :)

who is responsible for the chromosome theory, which says that genes of inheritance are in specific locations on a chromosome

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Walter Stanborough Sutton, a famous scientist from the 19th and early 20th century. He is famous for what you described, also known as the Boveri-Sutton chromosome theory, but what is the worst part is that he died young so his work was never fully done and god knows what he might have achieved in his life.
Hope this helps!

-Payshence xoxo

During DNA REPLICATION, which sequence of nucleotides will bond to the sequence ACGTAT?

Answers

The sequence will be:

TGCATA

Hope this helps :)

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