The biochemical functions of vitamin A include all of the following except
a. controlling vision in dim and bright light
b. development and maintenance of mucus-forming cells
c. cell differentiation
d. coenzyme synthesis

Answer:

nails ez pe ze

Explanation:

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Answer: C

Explanation:

Answer:

nucleic acids

Explanation:

Each chromosome in a eukaryotic cell is made up of two identical structures known as sister chromatids before mitosis.

The centromere separates during anaphase, allowing the sister chromatids to divide. The 46 freshly released chromatids can be pulled to one end of the cell, and the other 46 chromatids can be dragged to the other end as the centromere spindle fibres shrink. 

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When blood cells are made in the bones marrows, its called hemopoiesis

Answer:

T helper cells don't synthesize antibodies

Explanation:

Helper T cells are one of the most important types of cells during adaptive (acquired) immune responses. These cells activate B lymphocytes that secrete antibodies and macrophages that kill pathogenic organisms. Moreover, helper T cells also activate cytotoxic T cells that secrete molecules in order to destroy infected cells. However, antibodies that recognize and bind to specific antigenic determinants are only produced by B lymphocytes, thereby antibody production is a function that escapes from T helper cell-mediated responses.

Answer:

A

Explanation:

Organisms use respiration to generate energy. Aerobic respiration is when glucose (food) is broken down in the presence of oxygen to produce energy and CO2 as a byproduct.

Answer:

The process of getting oxygen into the body and releasing carbon dioxide is called respiration. ... Breathing is only the movement of oxygen into the body and carbon dioxide out of the body. The process of respiration also includes the exchange of oxygen and carbon dioxide between the blood and the cells of the body.

Answer:

Organic compounds chemically combine using carbon, hydrogen, and oxygen atoms.

Answer:

c

Explanation:

It was designed to determine whether the genetic material of the bacteriophage (a type of virus that infects bacteria) is made of DNA or protein.

The Hershey-Chase experiment, also known as the "Blender Experiment," was a classic experiment in molecular biology that was conducted in 1952 by Alfred Hershey and Martha Chase. It was designed to determine whether the genetic material of the bacteriophage (a type of virus that infects bacteria) is made of DNA or protein.

In the experiment, components of the bacteriophage were labeled with radioactive isotopes of sulfur and phosphorus. The labeled phages were then used to infect bacterial cells, and the cells were subjected to various treatments to separate the viral components from the bacterial components.

The results of the experiment showed that the genetic material of the bacteriophage was made of DNA, not protein. This was determined by the fact that the labeled DNA, but not the labeled protein, was able to enter the bacterial cells and infect them. This experiment provided strong evidence for the "central dogma" of molecular biology, which states that genetic information flows from DNA to protein, but not the other way around.

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Answer:

The four main types of tissue are :

A. Epithelial, connective, muscle and nerve.

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Answer:

c: Persistence in the environment leading to biomagnificention

Answer: Fearful and worried posture

Explanation:

Since dogs cannot talk, their body languages are used to interpret whatever emotion or feeling they may be experiencing.

When a dog is afraid, she tries to look small. She lowers her body and and leans away so that her center of gravity is over her hind legs to  make a quick retreat easy. She also puts her tail down and ears flattened back to her skull. Her eyes also look rounder than normal and she shows the whites of her eyes (whale eyes).

All these tell that a dog is scared and worried or feeling tense.

Answer:

Defensive Threat Posture

Explanation:

Whale eye (whites of eyes showing)

Tail down or fully tucked

Piloerection

Ears back or flatten against head

Pupils dilated

Corners of mouth pulled back

Body lowered

Body leaning backward

A defensive threat posture indicates a dog is being self-protective. This is seen in a dog who is fearful and would prefer to run away from the situation, but may bite if provoked or cornered. Stress signals were offered in the beginning, however ignored and the dog is showing extreme fear.

The answer is D. Nondisjunction can occur in mitosis, meiosis I, and meiosis II.

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division. This can result in daughter cells with abnormal chromosome numbers (aneuploidy).

In mitosis, nondisjunction can occur during anaphase, when the sister chromatids are supposed to separate and move to opposite poles of the cell. If nondisjunction occurs, both sister chromatids will go to the same pole, resulting in one daughter cell with an extra chromosome and one daughter cell with a missing chromosome.

In meiosis I, nondisjunction can occur during anaphase I, when the homologous chromosomes are supposed to separate and move to opposite poles of the cell. If nondisjunction occurs, both homologous chromosomes will go to the same pole, resulting in one daughter cell with an extra chromosome and one daughter cell with a missing chromosome.

In meiosis II, nondisjunction can occur during anaphase II, when the sister chromatids are supposed to separate and move to opposite poles of the cell. If nondisjunction occurs, both sister chromatids will go to the same pole, resulting in one daughter cell with an extra chromosome and one daughter cell with a missing chromosome.

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Answer:

the answer is D the sequence of nucleotides

Answer:

The first man who discovered disinfectants was Louis Pasteur

Answer:

Louis Pasteur

Explanation:

hope it helps <333

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Answer:

The correct answer is B) The company is promoting this development by stating that nuclear power does not produce pollutants.

Explanation:

Whilst the process of power generation itself does not produce environmental pollutants like fossil fuels which features the emission of carbon monoxide when they are partially combusted, it does leave behind radioactive wastes, in the same way, combusted charcoal or wood leaves ash behind.

The challenge with radioactive wastes is that they are inimical to human health and can remain so for hundreds of centuries.

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The true statement about osmosis is: Osmosis stops when equilibrium is reached, but water movement does not stop. At equilibrium, there is no net movement of water across a semipermeable membrane.

The statement "In osmosis, the movement of water will continue until there is no water remaining" is incorrect. Osmosis ceases when equilibrium is achieved, where the concentration of solutes on both sides of the membrane is equal.

Osmosis is not limited to the movement of water across a selectively or semipermeable membrane in cells alone. It can occur in various scenarios where a membrane selectively allows water passage but restricts the passage of solutes. It is essential to note that osmosis involves the movement of solvent molecules (usually water) and is influenced by the concentration gradient of solutes.

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Answer:

Similar.

Explanation:

The air temperature of Kuta is similar to the air temperature of Rog because both regions are present at the same distance from equator and also located near the ocean. The average air temperature of Kuta is 25.3 °C and the annual rainfall is 1642 mm which is due to the presence of ocean that is responsible for moderate temperature and more rainfall. So having the same environment and geography, both have similar air temperature.

Answer:

nice cheating skills

Explanation:

Kuta and Rog are the same distance from the equator, and they are both near the ocean. Using the information in the map, how does the air temperature of Kuta compare to the air temperature of Rog? Why? The air temperature of Kuta is

The actions of the extensor carpi radialis brevis are localized to the wrist. The correct answer is D) wrist.

The extensor carpi radialis brevis is a muscle located in the forearm. Its primary function is to extend and abduct the wrist joint.

The muscle originates from the lateral epicondyle of the humerus, which is a bony prominence on the outer side of the elbow. From there, it travels down the forearm and inserts onto Brachioradialis the base of the third metacarpal bone of the hand.

The extensor carpi radialis brevis works in conjunction with other muscles of the forearm to produce movements at the wrist. When it contracts, it extends the wrist joint, which means it moves the hand backward, away from the palm. It also assists in the abduction of the wrist, which is a sideways movement that moves the hand toward the thumb side of the forearm.

The muscle does not have direct actions on the brachii (A) or pronator (B) muscles. While it originates from the lateral epicondyle of the humerus (C), its actions are focused on the wrist joint (D).

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The Complete question is

The actions of the extensor carpi radialis brevis are localized to the __________.

A. brachii

B. pronator

C. humerus

D. wrist

Answer:

C. observation, question, hypothesis, prediction, experiment/observation, conclusion

Explanation:

The phenotypic and genotypic ratios of Mendel's monohybrid F1 crosses would be 1:2:1 and 1:2:1, respectively.

If the yellow pea allele and the green pea alleles were codominant, the phenotypic and genotypic ratios of Mendel's monohybrid F1 crosses would be 1:2:1 and 1:2:1, respectively. This is because when two different alleles are codominant, both are expressed in the offspring. So, in this case, the F1 generation would have yellow-green intermediate phenotype instead of just yellow and green phenotypes.

The genotypic ratio would be 1:2:1, where 1/4 of the offspring would be YY, 1/2 would be Yy, and 1/4 would be yy. This is because the two alleles are codominant, and both will be expressed equally in the offspring. The phenotypic ratio would also be 1:2:1, where 1/4 of the offspring would be yellow, 1/2 would be yellow-green intermediate, and 1/4 would be green.

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Answer:

The answer is D

Explanation:

Right on edge

If you inoculate a new culture with a wrinkly colony, grow the culture overnight, and then plated a sample of the bacteria, you would expect to see two different types of colonies on the plate.

Wrinkly colonies are composed of bacterial cells that have mutated and lost the ability to produce a molecule known as cyclic diguanylate (c-di-GMP). As a result, the bacteria become sticky and adhere to one another, forming a dense mat of cells that resembles a wrinkled surface.

Bacterial colonies with normal morphology.The second type of colonies will resemble the typical morphology of the bacterial cells present in the culture before inoculating with the wrinkly colony. Because not all bacterial cells in the culture have the same mutation that created the wrinkly colony, you would expect to see colonies with a normal morphology as well.

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If an organism with the genotype ww is crossed with another ww organism, all the offspring will inherit the same genotype, which is ww. In this scenario, since both parents are homozygous for the recessive allele, there is no possibility for the offspring to be heterozygous.

The genotype ww indicates that both alleles for the particular gene are the same and recessive. In genetic terms, when two organisms with the same homozygous genotype are crossed, the resulting offspring will also be homozygous for that trait. This is because each parent can only contribute one allele, and in this case, both parents only have the recessive allele (w) to pass on.

Therefore, the proportion of offspring that would be heterozygous in this specific cross would be zero. All the offspring will be homozygous for the recessive allele (ww) just like their parents. This type of cross is referred to as a homozygous cross or a true-breeding cross, as it produces offspring with the same genotype as the parents.

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Answer:

directional selection

Explanation:

Directional selection is a type of natural selection where individuals exhibiting an extreme phenotype for a given trait are favored over the mean or other extreme phenotype. This type of selection can lead to drastic and fast changes in allele frequencies between generations in a population, being particularly important in speciation processes. Directional selection is common under environmental changing conditions (e.g., weather, climate, food availability, etc) or when individuals migrate to other regions in order to adapt to new environmental pressures.

Thyroid hormones are principally concerned with the increase in metabolic rate of tissues that can result in certain effects such as:

A) Increased heart rate

C) Increased body temperature

D) Increased cardiac output.

This is referred to as a chemical messenger which are produced by different types of glands and they are released directly into the bloodstream for action.

They control metabolic reactions and an example is the thyroid hormone which is located in the front of the neck. It controls growth and has other effects on the body such as increase in temperature and heart rate of the individual.

There is also an increase in the cardiac output due to the different reactions occurring which is therefore the reason why options A, C and D were chosen as the most correct choices.

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The full question is:

A nurse is describing the action of thyroid hormones to a client. The nurse would include information that thyroid hormones are principally concerned with the increase in the metabolic rate of tissues that can result in which of the following? Select all that apply.

A) Increased heart rate

B) Decreased respiratory rate

C) Increased body temperature

D) Increased cardiac output

E) Decreased oxygen consumption

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