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Semenov [28]
3 years ago
7

Which of the following theories sees aging as a process whereby cells are assumed to have a limitation on the number of times th

ey can reproduce to repair damage?a. wear-and-tear theory
b. cellular clock theory
c. activity theory
d. free radical theory
Biology
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

Option B, Cellular clock theory

Explanation:

The Cellular Clock Theory of Aging states that the older the cells get , the more they become incapable of reproducing or replicating. The telomeres (tip of the chromosomes) are DNA sequences which cap the chromosomes get smaller in size with time and eventually they hinder the cell division. As per a normal standard rate, a telomere replicates 70 to 80 times in its life span and then it stops replicating.

Hence, option B is correct

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An organism is discovered that thrives both in the presence and absence of oxygen in the air. Curiously, the consumption of suga
Vinvika [58]

A facultative anaerobe.

Explanation:

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Aerobic respiration produces 32 molecules of ATP from one  molecules of glucose while fermentation produces only 2 molecules of ATP . Thus when the organism switches to fermentation pathway it utilizes more and more glucose to reach its energy demands.

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7 0
3 years ago
1. Which of the following distinguishes anaerobic respiration from aerobic
gogolik [260]

Answer:

option b is correct

Explanation:

aerobic respiration produce 38 ATP per glucose molecule while anaerobic respiration produce only 2 ATP per glucose molecule

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Vitamin B6 is essential for the synthesis of Select one: A. memory cells. B. iron. C. heme. D. T cells.
strojnjashka [21]

Vitamin B6 is essential for the synthesis of T cells. These cells form part of the immune system.

<h3>What is Vitamin B6?</h3>

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Vitamin B6 is also fundamental for the generation of interleukin-2, which is a molecule involved in immune responses.

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Since evolution is considered a scientific theory what must be true about the concept of evolution?
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Answer:

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