Cell Cycle Checkpoints and Stages

Front

What is the first checkpoint of the cell cycle?

Back

G1 checkpoint

Front

What triggers the cell to pass the G2 checkpoint and plays a role in breaking down the nuclear membrane?

Back

MPF (Maturation Promoting Factor)

Front

Which checkpoint ensures DNA has been replicated correctly during S phase?

Back

G2 Checkpoint

Front

What phase do neuron cells, which rarely replicate, enter?

Back

G0 phase

Front

What is cyclin?

Back

A family of proteins that regulates the cell cycle.

Front

What is the purpose of the G1 checkpoint?

Back

To assess the cell's size, nutrients, and DNA integrity before entering S phase.

Front

What happens at the G2 checkpoint?

Back

The cell checks for DNA damage and ensures all DNA is replicated before mitosis.

Front

What is the role of MPF in the cell cycle?

Back

It triggers the cell to enter mitosis and helps in breaking down the nuclear membrane.

Front

What is the M checkpoint responsible for?

Back

To ensure that all chromosomes are properly attached to the spindle before anaphase.

Front

What is the significance of the G0 phase?

Back

Cells in G0 are in a resting state and do not actively prepare to divide.