The right answer for the question that is being asked and shown above is that: "e) b and c." Cdk is present throughout the cell cycle; Cdk is an enzyme that attaches phosphate groups to other proteins
These are the following choices:
a)cdk is inactive in the presence of cyclin
b) cdk is present throughout the cell cycle
c) cdk is an enzyme that attaches phosphate groups to other proteins
d) a and b
e) b and c