Biology: Cell Cycle Assessment Flashcard

Front

What are the main molecules that act as gatekeepers for each checkpoint of the cell cycle?

Back

Cyclins and various enzymes.

Front

What is the first phase of the cell cycle?

Back

Interphase.

Front

What is the second phase of the cell cycle?

Back

Mitosis.

Front

What is the third phase of the cell cycle?

Back

Cytokinesis.

Front

What is the first checkpoint of the cell cycle?

Back

G1 checkpoint.

Front

What is the purpose of the G1 checkpoint?

Back

To assess cell size, nutrients, and DNA integrity before DNA replication.

Front

What happens during the S phase of the cell cycle?

Back

DNA replication occurs.

Front

What is the role of the G2 checkpoint?

Back

To ensure that DNA has been replicated correctly and to check for DNA damage before mitosis.

Front

What is the significance of the M checkpoint?

Back

It ensures that all chromosomes are properly attached to the spindle before anaphase begins.

Front

What can happen if the checkpoints that regulate the cell cycle fail?

Back

It can lead to uncontrolled cell division and potentially cancer.