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sergiy2304 [10]
3 years ago
8

A segment of DNA that codes for a negative regulator protein is called a

Biology
1 answer:
mihalych1998 [28]3 years ago
7 0
Perhaps the answer your looking for is, a tumor suppressor gene.
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3. Explain how it is possible to have thousands of different proteins when there are only 20 different amino acids.
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Amino acids create protiens, endless possibilities of combinations of amino acids result in a wide variety of proteins
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The cell cycle is a repeating sequence of growth and _______________ during the life of a cell
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The answer that goes in the blank is Division. 
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Before starch can enter a cell it must be digested to form simple sugars. Why?
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Starch is a high molecular weight substance; therefore, it is insoluble to our cells. It needs to be broken down to simple sugars like glucose in order for it to be dissolved/absorbed in our blood. This is because simple sugars has smaller molecular weights and are more soluble.
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Since her stomach was removed, Mrs. Lopez has the most difficulty initiating digestion of: Since her stomach was removed, Mrs. L
Svetllana [295]

Mrs. Lopez has the most difficulty initiating digestion of proteins after her stomach is removed. The correct option is C.

Explanation:

When the stomach is removed due to complications such as in cancers the food eaten directly goes to intestine. Without stomach Mrs Lopez will have difficulty in starting the digestion of protein.

The digestion of protein takes place and starts in the stomach and duodenum of intestine. There are enzymes as pepsin, trypsin and chyomtrypsin secreted  by stomach and pancreas. Pepsin breaks the peptide bonds of protein.

The HCl and the enzymes in stomach initiates the process of digestion of protein. The amino acids formed are ardent in various metabolic processes and repair.

lipids and carbohydrate digestion starts from the mouth only as salivary amylase and lipase initiates the process.

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3 years ago
4. DNA typing was first described in 1985 by English geneticist
irga5000 [103]

Answer:

2. Alec Jeffreys

Explanation:

'DNA fingerprinting' or DNA typing (profiling) as it is now known, was first described in 1985 by an English geneticist named Alec Jeffreys. Dr. Jeffreys found that certain regions of DNA contained DNA sequences that were repeated over and over again next to each other.

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