Biology 2nd Edition by Robert Brooker, Eric Widmaier ,Linda Graham ,Peter Stiling

تمرين 8

Checkpoints during the cell cycle are important because they
A) allow the organelle activity to catch up to cellular demands.
B) ensure the integrity of the cell's DNA.
C) allow the cell to generate sufficient ATP for cellular division.
D) are the only time DNA replication can occur.
E) do all of the above.