Definitions Flashcards
1
Q
Checkpoint
A
A biochemical control mechanism that prevents the cell from progressing from one stage to another unless specific goals and requirements have been met
2
Q
Origin
A
A sequence of DNA at which replication is initiated
3
Q
Replicon
A
A unit of the genome in which DNA is replicated. Each contains an origin for initiation and replication.
4
Q
Equilibrium density-gradient centrifugation
A
A gradient method used to separate macromolecules on the basis of differences in their density. For DNA, it is prepared from a heavy soluble compound such as CsCl.
5
Q
S phase
A
The restricted part of the cell cycle during which the synthesis of DNA occurs
