Which of the following theories suggests that aging is built into our cells?
A) free-radical theory
B) wear-and-tear theory
C) cellular clock theory
D) immunodeficiency theory

Question

Quizplus · Accepted Answer

The cellular clock theory suggests that aging is built into our cells and is governed by the number of times our cells can divide before they stop dividing and senesce. This is because of the shortening of telomeres, which are protective caps on the ends of chromosomes, after each cell division. Eventually, cells stop dividing and die, leading to the aging process. The free-radical theory proposes that aging is caused by the accumulation of damage from free radicals in cells. The wear-and-tear theory suggests that aging is caused by the accumulated effects of daily activities on the body. The immunodeficiency theory proposes that aging is caused by declines in the immune system.

Which of the Following Theories Suggests That Aging Is Built