Which of the following metabolic pathways occur(s)in mitochondria?
A)glycolysis and fermentation
B)fermentation and chemiosmosis
C)glycolysis and oxidation of pyruvate to acetyl CoA
D)oxidation of pyruvate to acetyl CoA and the citric acid cycle
E)fermentation and oxidative phosphorylation

Question

Quizplus · Accepted Answer

Glycolysis occurs in the cytoplasm, so options A, B and E are excluded. Fermentation doesn't involve mitochondria, so A, B and E are excluded. The only options that are left are C and D. However, C only involves oxidation of pyruvate to acetyl CoA and doesn't complete the energy extraction process completely. D, on the other hand, involves the complete oxidation of pyruvate to CO2, which occurs in the Citric Acid Cycle, which occurs in the mitochondrial matrix. Therefore, D is the correct answer.

Which of the Following Metabolic Pathways Occur(s)in Mitochondria