Answer to Question #107635 in Cell Biology for Eden Gebreegziabher

Question

Which of the following statements concerning the conversion of pyruvate to acetyl-CoA is true? (This question has more than one correct answer)
a. Pyruvate is shown entering a chloroplast
b. This reaction harnesses the last of the remaining potential energy from glucose
c. This reaction requires oxygen to proceed
d. This is not an oxidation/reduction reaction; that is, no electrons have moved
e. This reaction takes place inside the mitochondria

Answer 1

Correct statements

B, C and E.

Briefly, after glycolysis two molecules of pyruvate with potential of extractable energy get oxidized to produce Acetyl Coenzyme A. Acetyl Co-A is subsequently used in the production of ATP in the next stage (citric acid circle). Oxidation of pyruvate occurs in the matrix in the inner membrane of mitochondria where oxygen is required since it is an aerobic respiration.