A liver cell requires energy to move vitamins from an area of low concentration, across the cell membrane, to an area of high concentration. The process used by the liver cell is called A) osmosis. B) active transport. C) passive transport. D) facilitated diffusion.

Answers

Answer 1

Answer:

The correct answer is Active transport.

The transportation of molecules against the concentration gradient from the area of its low concentration to high concentration is called Active Transport.The molecular size of vitamins are large so, it is not easy to transport them against the concentration gradient without the help of energy. This energy is in the form of ATP.

Thus, liver uses Active Transport to move vitamins from one area to another area.

Answer 2

Answer: Alright it is going from a low concentration to a higher concentration.... ACTIVE TRANSPORT is correct . :)

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Approximately _____ elements occur naturally on earth. 117, 25, 92, 82

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Answer: The correct answer for the blank is-

92.

There has been total 118 elements discovered o earth out of which approximately 92 elements are naturally occurring. Other elements are produced by artificial means.

The most abundantly occurring elements are oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorous.

The number of naturally occurring elements is actually in dispute, believe it or not. Some say 98, others say 88 and all cite various reasons. The traditionally accepted answer would be 92.

Which characteristic proves Lactobacillus acidophilus is from the specific kingdom Eubacteria?

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The characteristic that proves Lactobacillus acidophilus is from the specific kingdom Eubacteria because it is a beneficial bacteria. It is usually used in fermentating yogurt and and sauerkraut.

Answer:

The characteristic that proves Lactobacillus acidophilus is from the specific kingdom Eubacteria because it is a beneficial bacteria.

Explanation:

A drastic short-term reduction of population size caused by natural disasters, disease, or predators is called:

Answers

A drastic short-term reduction of population size caused by natural disasters, disease or predators is called a bottleneck event. A bottleneck event or also known as genetic bottleneck results in the reduction of the gene pool of the population, making the current population have a low genetic diversity and high genetic deviation. Because of low genetic variation, the new population will become distinct from the original.

The answer is D. A reduction in the birth rate (edge e2020)

Fossils that consist of minerals that have filled in an open mold of an organism are called

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Natural casts

Natural casts are fossils that consistof minerals that are filled in an open mold of an organism. This type of castsis made when minerals are deposited in the mold. Casts can also be syntheticallyproduced when the molds are filled with synthetic material such as latex.

Which federal agency the encompasses the CDC, FDA, and NIH?SPCA
EPA
HHS
USDA

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The correct answer should be HHS because all three agencies are under the jurisdiction of the Department of Health and Human Services (HHS)

HHS (Health and Human Services) is the correct answer.

US Department of Health and Human Services is the federal agency which aims at protecting the health of people of America and providing essential human services. Under the umbrella of this federal agency, several organizations work which include CDC (Centers for Disease Control and Prevention), FDA (Food and Drug Administration) and NIH (National Institutes of Health).

Mechanical vector that injects recombinant DNA directly into the nucleus of a host cell

Answers

That mechanical vector would be a "Virus".

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