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Lena [83]
2 years ago
13

Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lea

d to cancer? A. One that slows down the cell cycle. B. One that acts as a growth-reducing molecule. C. One that responds to growth-promoting molecules. D. One that speeds up the cell cycle.
Biology
1 answer:
SSSSS [86.1K]2 years ago
7 0

Answer:

Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer?

One that speeds up the cell cycle.

Explanation:

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The correct answer is option (B) lemon juice.

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An acid has a high concentration of hydrogen ions (H+)  and a base has a low concentration of hydrogen ions. Higher the hydrogen ion concentration, pH is acidic. Among the given substances, lemon juice has a pH of 2, urine has a pH of 6, tomato juice has a pH of 4 and black coffee has a pH of 5.  Since lemon juice has a pH of 2, it has the lowest –OH ion concentration.

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3 years ago
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Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.

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I believed the answer is C
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