MCAT Biochemistry Question 24: Answer and Explanation
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Question: 24
9. Consider a reaction catalyzed by enzyme A with a Km value of 5 × 10–6 M and vmax of
At a concentration of 5 × 10–4 M substrate, the rate of the reaction will be:
- A.
.
- B.
.
- C.
.
- D.
.
Correct Answer: C
Explanation:
At a concentration of 5 × 10–4 M, there is 100 times more substrate than present at half maximal velocity. At high values (significantly larger than the value of Km) the enzyme is at or near its vmax, which is.