AP Biologyeasymcq1 pt
The tumor suppressor p53 responds to DNA damage by
A.halting the cycle for repair or triggering apoptosis
B.speeding up replication
C.destroying all ribosomes
D.increasing mutation rate
Explanation
Core Concept
p53 activates genes that pause the cycle and repair DNA; if damage is too severe, it initiates programmed cell death — preventing mutations from propagating.
Correct Answer
Ahalting the cycle for repair or triggering apoptosis
More Unit 4: Cell Communication and Cell Cycle practice questions
- mediumWhich statement about the cell cycle's control system is correct?
- mediumA drug blocks adenylyl cyclase. Which signaling step is directly prevented?
- easyWhich type of molecule typically serves as the FIRST messenger?
- easyHow many daughter cells does one mitotic division produce?
- easyDensity-dependent inhibition refers to cells
Practice more AP Biology questions with full explanations
Practice Unit 4: Cell Communication and Cell Cycle Questions →