In the context of programmed theories of aging, which of the following is likely to determine the number of times a cell can divide and survive?
A) The free radical content in the body
B) The length of telomeres for a species
C) The extent of cross-linking
D) The extent of wear-and-tear of the body through use

Question

Quizplus · Accepted Answer

The length of telomeres, which are the protective caps at the ends of chromosomes, is a key factor in determining the number of times a cell can divide. As cells divide, telomeres shorten, and when they become too short, the cell can no longer divide and becomes senescent or dies. This mechanism is a central aspect of the programmed theories of aging, suggesting a biological clock that limits cellular lifespan and thereby influences the aging process.

In the Context of Programmed Theories of Aging, Which of the Following