Question

What factors may contribute to aging?
CA Celis stop dividing after 50 divisions
B. Cells become more and more damaged.
C Genes tell" cells to stop dividing.
D. all of the above

Answer 1

Answer:

The factor that contributes to aging is: A Cells stop dividing after 50 divisions.

Explanation:

• Normally after 40 to 50 divisions the cells stops dividing because they had already lost too much DNA for other divisions.

• So they eventually die, making the appearance like an aged person in any individual.

• As DNA is copied in every cell division process, they tend to loose small part of telomeres in each transfer process.

• Hence, after 50 divisions these cells fails to divide resulting in aging.

Answer 2

Answer:

D. All of the Above

Explanation:

just took the test and its all of the above