Cyclin-Dependent Kinases (Cdk's) Catalyze the Phosphorylation of Targeted Proteins, a Process

Cyclin-dependent kinases (Cdk's) catalyze the phosphorylation of targeted proteins, a process that

A) decreases the mass of protein.
B) makes the targeted proteins hydrophobic.
C) changes the shape and function of the targeted proteins.
D) gives the proteins a three-dimensional shape.
E) blocks the cell cycle from proceeding.