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.

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

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

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

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

• 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.

• 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

What happens during the S phase?

• A checkpoint over the connection of the spindle fibers
• The cell grows
• DNA is replicated
• The cell enters the G0 phase

Which of the following phases is not included in interphase?

• G1
• S
• G2
• M

Why is the Cell Cycle often represented as a circle?

• Because it is easy to draw

• Because cell cycles has a distinct beginning and end point

• to highlight the checkpoints

• to show that it repeats over and over