Cell cycle checkpoints
Flashcard
•
Biology
•
11th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What are cell cycle checkpoints?
Back
Cell cycle checkpoints are regulatory pathways that monitor and control the progression of the cell cycle, ensuring that cells do not proceed to the next phase until certain conditions are met.
2.
FLASHCARD QUESTION
Front
Name the three main checkpoints of the cell cycle.
Back
G1 checkpoint, G2 checkpoint, and M (mitosis) checkpoint.
3.
FLASHCARD QUESTION
Front
What is the role of tumor-suppressor genes in the cell cycle?
Back
Tumor-suppressor genes produce proteins that inhibit cell division, preventing uncontrolled cell growth and tumor formation.
4.
FLASHCARD QUESTION
Front
What happens when DNA is damaged during the cell cycle?
Back
If DNA is damaged and cannot be repaired, apoptosis (programmed cell death) is initiated to prevent the propagation of damaged cells.
5.
FLASHCARD QUESTION
Front
What are proto-oncogenes?
Back
Proto-oncogenes are normal genes that, when mutated, can become oncogenes, leading to uncontrolled cell division.
6.
FLASHCARD QUESTION
Front
How do oncogenes affect the cell cycle?
Back
Oncogenes can cause super-accelerated mitosis, leading to rapid cell division and potentially cancer.
7.
FLASHCARD QUESTION
Front
What is the significance of the G1 checkpoint?
Back
The G1 checkpoint assesses cell size, DNA integrity, and nutrient availability before allowing the cell to enter the S phase for DNA replication.
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