TCA Cycle – Section 1

21. Which one of the following is not the intermediate of Kreb’s cycle?

A. Isocitrate
B. Succinate
C. Fumarate
D. Stearate

22. Which one is not the main protein in the electron transport chain?

A. NADH dehydrogenase
B. Cytochrome bc1 complex
C. Cytochrome oxidase
D. Citrate synthase

23. How many ATPs are produced during the citric acid cycle?

A. 10
B. 13
C. 12
D. 8

24. The FADH₂ and NADH produced by the oxidation of one acetyl-CoA results in the synthesis of about

A. 3 ATPs
B. 6 ATPs
C. 11 ATPs
D. 15 ATPs

25. In eukaryotes, electron transport occurs in

A. membranes and mitochondria
B. endoplasmic reticulum
C. cytoplasm
D. all of the above