CGIs a 30-Year-Old Retired Stockbroker Who Has Developed Possible Skin

Multiple Choice

C.G.is a 30-year-old retired stockbroker who has developed possible skin cancer while sailing in Polynesia.A skin biopsy is analyzed for cyclin-dependent kinase activity at different concentrations of the cosubstrate adenosine triphosphate (ATP) .The results are shown in Figure 4.7. The apparent effect of the drug on C.G.'s kinase activity is to:

A) Reduce the Vmax of the enzyme.
B) Increase the Vmax of the enzyme.
C) Reduce the Km of the enzyme.
D) Increase the Km of the enzyme.
E) Allosterically activate the kinase.