Use the following information to answer the question below.

The citric acid cycle.
If pyruvate oxidation is blocked, what will happen to the levels of oxaloacetate and citric acid in the citric acid cycle shown in the accompanying figure?
A) Oxaloacetate will decrease and citric acid will accumulate.
B) Oxaloacetate will accumulate and citric acid will decrease.
C) Both oxaloacetate and citric acid will decrease.
D) Both oxaloacetate and citric acid will accumulate.

Question

Use the following information to answer the question below.

The citric acid cycle.
If pyruvate oxidation is blocked, what will happen to the levels of oxaloacetate and citric acid in the citric acid cycle shown in the accompanying figure?
A) Oxaloacetate will decrease and citric acid will accumulate. 
B) Oxaloacetate will accumulate and citric acid will decrease. 
C) Both oxaloacetate and citric acid will decrease. 
D) Both oxaloacetate and citric acid will accumulate.

Quizplus · Accepted Answer

Pyruvate is a precursor to oxaloacetate in the citric acid cycle. If pyruvate oxidation is blocked, the levels of oxaloacetate will increase while the levels of citric acid will decrease since there will be less substrate to enter the cycle.

Use the Following Information to Answer the Question Below