Apoptosis and Its Significance · Zoology

In the context of cancer, how do mutations in the p53 gene typically affect apoptosis?

  1. They increase the rate of apoptosis in all tumor cells
  2. They disable a checkpoint that triggers apoptosis after DNA damage
  3. They drive overproduction of Cytochrome c from mitochondria
  4. They allow tumor cells to bypass Bcl-2 family regulation
Show answer and explanation

Correct answer: They disable a checkpoint that triggers apoptosis after DNA damage

p53 is a tumor suppressor that normally induces apoptosis if DNA damage is irreparable. Mutations in p53 prevent this programmed death, allowing damaged cells to survive and proliferate, contributing to tumor progression.

Difficulty: Medium Question 10 of 20

Practice all 20 Apoptosis and Its Significance questions

Keep practicing

More Apoptosis and Its Significance questions