An environmental change leads to cyclin being degraded at a rate much faster than normal.Such a change would tend to _______ the activity of the Cdk, which would lead to _______ phosphorylation of the target protein, which in turn would lead to _______ cells being stopped at the checkpoint.
A) increase; increased; more
B) increase; decreased; fewer
C) decrease: increased; fewer
D) decrease; decreased; more
E) decrease; decreased; fewer

Question

Quizplus · Accepted Answer

Cyclin degradation leads to decreased activity of Cdk (cyclin-dependent kinase). Lower Cdk activity results in decreased phosphorylation of target proteins, which in turn leads to more cells being stopped at the checkpoint, as they cannot progress through the cell cycle without proper phosphorylation signals.

An Environmental Change Leads to Cyclin Being Degraded at a Rate