Which of the following is a typical means of halting normal cell division?

Question

Quizplus · Accepted Answer

The shortening of telomeres is a typical means of halting normal cell division. Telomeres are protective caps on the end of chromosomes that shorten with every round of cell division, and once they become too short, cell division is halted. This mechanism helps prevent cells from dividing uncontrollably and potentially becoming cancerous. The other options listed (B, C, and D) are actually mechanisms that can halt abnormal cell division and prevent cancer. Increasing the activity of p53 is a tumor suppressor mechanism that can inhibit cell division and induce apoptosis in cells with DNA damage. Activating oncogenes is actually associated with promoting uncontrolled cell division and therefore cancer, not halting cell division. Triggering apoptosis is a programmed cell death mechanism that can be activated in cells that are no longer needed or that have accumulated too much damage. While apoptosis can halt cell division in those cells, it does not necessarily halt normal cell division in healthy cells.

Which of the Following Is a Typical Means of Halting