Cell Cycle Checkpoints

What is the purpose the the cell cycle checkpoints?

• To repair damaged cells before they enter cell division.

• To remove damaged cells from an organism.

Tags

NGSS.HS-LS1-4

How many cell cycle checkpoints are there?

• 1

• 2

• 3

• 4

What is the first checkpoint of the cell cycle?

• Mitosis checkpoint

• G₁ checkpoint

• G₂ checkpoint

When is apoptosis or cell death initiated?

• When DNA damage is repaired.

• When cells are removed from the cell cycle.

• When DNA damage cannot be repaired.

This is the cell cycle checkpoint that makes sure environmental conditions are ideal for cell survival and cell growth

• G1 Checkpoint
• G2 Checkpoint
• M Checkpoint
• I Checkpoint

This is the cell cycle checkpoint that makes sure DNA has been replicated correctly during S phase.

• G1 Checkpoint
• G2 Checkpoint
• M Checkpoint
• I Checkpoint

This is the cell cycle checkpoint that makes sure the correct number of chromosomes are present and attached to microtubules or spindle fibers?

• G1 Checkpoint
• G2 Checkpoint
• M Checkpoint
• I Checkpoint

Name the 3 checkpoints of the cell cycle

• Anaphase checkpoint, mitosis/metaphase checkpoint, and telophase checkpoint

• Interphase checkpoint, S phase checkpoint, and M phase checkpoint

• G1 checkpoint, G2 checkpoint, and S phase checkpoint

• G1 checkpoint, G2 checkpoint, and mitosis/metaphase checkpoint

The checkpoints that regulate the cell cycle can fail when ____ becomes damaged.

• DNA 
• Cell Membrane
• Mitochondria
• Ribosomes

Tags

NGSS.HS-LS1-4

Why is it necessary for the cell cycle to have regulation (checkpoints)?

• To ensure the cell functions properly before division

• To ensure that the old cell is still functional

• To ensure that the new cell is functional after division

• So that the DNA unfolds properly

Tags

NGSS.HS-LS1-4