Cyclins & Mitotic Index Quiz Questions

What could cause a cell to fail the G2 checkpoint?

• Too many mutations in the DNA
• Not enough resources in the cell
• The spindle fibers aren't properly connected to the chromosomes
• Organelles have failed to replicate properly

During which phase of mitosis does the M-checkpoint occur?

• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase

Cdks bind with ____, enabling the Cdks to function as enzymes that control the cell cycle.

• cyclins
• histones
• checkpoints
• DNA

Which cyclin(s) is/are responsible for the G1/S transition?

• Cyclin D
• Cyclin E
• Cyclin A
• Cyclin B

Which cyclin(s) is/are responsible for initiating DNA replication?

• Cyclin D
• Cyclin E
• Cyclin A
• Cyclin B

Which cyclin(s) is/are responsible for initiating the beginning of mitosis?

• Cyclin D
• Cyclin E
• Cyclin A
• Cyclin B

Which cyclin(s) is/are responsible for initiating the beginning of anaphase?

• Cyclin D
• Cyclin E
• Cyclin A
• Cyclin B

Lung sample A. How many cells are in mitosis?

Lung sample A. How many cells are there total?

Lung sample A. What is the mitotic index?