What is the main purpose of the G1 checkpoint?

Practice Questions

Q1
What is the main purpose of the G1 checkpoint?
  1. To check DNA integrity
  2. To ensure proper chromosome alignment
  3. To assess cell size and nutrient availability
  4. To initiate DNA replication

Questions & Step-by-Step Solutions

What is the main purpose of the G1 checkpoint?
  • Step 1: Understand that the G1 checkpoint is a control point in the cell cycle.
  • Step 2: Know that this checkpoint happens before the cell starts to copy its DNA.
  • Step 3: Realize that the G1 checkpoint checks if the cell is big enough.
  • Step 4: Learn that it also checks if there are enough nutrients available for the cell to grow.
  • Step 5: Understand that if the cell meets these conditions, it can move on to the next phase of the cell cycle.
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