What does the process of diffusion do for the cell

1 answer:

3 0

Diffusion is important to the cell because it is the process by which useful molecules enter the cell and waste products removed from the cell.

Without diffusion, cells and tissues of the body can not get important nutrients and gases for survival and would die.

An example is the eye. The eyes lack a great number of blood vessels (which carry oxygen that diffuses into cells) and must have an extra supply of oxygen. The atmosphere provides the extra needed oxygen which is taken up into the cells of the eye by diffusing through the cornea and thus the eye is kept functioning. If this does not happen , the eye would dry out.

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Explanation:

Embryonic stem cells are plentiful, and they can create every cell in the human body. Researchers can use these cells to create tissues. They can possibly grow new organs in a lab to treat diseased organs. Adult stem cells are rarer in the human body, and they’re limited in the types of cells they can make.

An embryo can’t grow without its stem cells, so people have ethical concerns about their use. Adults can provide consent to donate their stem cells, so there are fewer ethical issues regarding the use of adult stem cells.

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4) List all the producers: 5) 6) 7) HELLPPPP

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3) grass and pine cone
4) lemming, rabbit, insect, squirrel, deer, caribou and moose
5) badger and bear
6) wolf, snowy owl, hawk, fox and ant
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If a disease-destroying corn plant in a field is swept through an ecosystem, what would happen to the corn-eating bird populatio

Nataly_w [17]

It would decrease as their prime food source would be taken away. This would result in a decline in population as the birds wouldn’t have sufficient food.

Hope that helps. :)

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Which of the following will lead to speciation? Select one of the options below as your answer. A. Variation in gene pool B. Lac

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The answer is A. Variation in gene pool
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hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support

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Hi,

Harshey and Chase did a great experimentation which was basically a two step experiment to prove that DNA and not proteins are the actual carriers of genetic information from parents to offspring.

In the first part of their experiment, they used bacteriophages (virus that eat bacteria). They used radioactively labeled sulphur(35S) medium to grow bacteriophages and observed that all the bacteriophages had proteins with radioactive sulphur(35S).

In the next step they allowed these phages to infect bacteria and to their surprise, they found that the bacteria did not had radioactively labeled sulphur in them because the coat of bacteriophage stays outside the body of bacteria when it attacks it. This proved that DNA not proteins were the hereditary material.

To make their results more reliable, they did a second experimentation in which, they marked the DNA of the phage with radioactive phosphorus 32P. After labeling DNA, they repeated the same experiment and this time, they found radioactive phosphorus inside the bacteria.

This meant that the bacteria had DNA of phage entered inside them and this again proved that DNA not proteins are the hereditary material. You can see attached image for better understanding.

Hope it help!

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