Which of the following is not usually seen when a cell loses telomerase activity?
A)Telomeres shorten slightly with each cell division.
B)After 30-50 divisions, cells show signs of senescence and then die.
C)In the immune system, certain capacity for protection is gradually lost.
D)Many normal somatic cells gain the ability to divide indefinitely.

Question

Quizplus · Accepted Answer

When a cell loses telomerase activity, telomeres shorten with each cell division, leading to eventual senescence and death. The immune system also gradually loses its capacity for protection due to telomere shortening. However, normal somatic cells do not gain the ability to divide indefinitely when telomerase activity is lost. Rather, this is a characteristic of cancer cells that have found a way to reactivate telomerase.

Which of the Following Is Not Usually Seen When a Cell