Checkpoints

Definition

In cell biology, checkpoints are control mechanisms in the cell cycle that ensure each phase is completed accurately before proceeding to the next.

Related terms

Cell Cycle:

This is the process by which a cell duplicates its DNA and divides into two daughter cells.

Apoptosis:

Also known as programmed cell death, this process eliminates cells that are damaged beyond repair, preventing them from becoming potentially harmful.

Cyclins and Cyclin-dependent kinases (CDKs): These are proteins involved in regulating the progression of a cell through the cell cycle. They act like green lights at traffic intersections, signaling when it's safe for a cell to proceed to the next stage of division.