The following question refers to this figure of a simple metabolic pathway:

-A mutation results in a defective enzyme A. Which of the following would be a consequence of that mutation?
A) an accumulation of A and no production of B and C
B) an accumulation of A and B and no production of C
C) an accumulation of B and no production of A and C
D) an accumulation of B and C and no production of A
E) an accumulation of C and no production of A and B

Question

The following question refers to this figure of a simple metabolic pathway:
 
-A mutation results in a defective enzyme A. Which of the following would be a consequence of that mutation?
A) an accumulation of A and no production of B and C 
B) an accumulation of A and B and no production of C 
C) an accumulation of B and no production of A and C 
D) an accumulation of B and C and no production of A 
E) an accumulation of C and no production of A and B

Quizplus · Accepted Answer

If enzyme A is defective, it cannot catalyze the reaction to convert substrate A into products B and C, leading to an accumulation of A and no production of B and C.

The Following Question Refers to This Figure of a Simple