Protein kinase is an enzyme that functions in which of the following ways?
A) as a second messenger molecule
B) as a receptor for various signal molecules
C) activates or inactivates other proteins by adding a phosphate group to them
D) activates a G protein

Question

Quizplus · Accepted Answer

Protein kinase adds a phosphate group to other proteins, which can activate or inactivate them.

Protein Kinase Is an Enzyme That Functions in Which of the Following