Electron transport chain and oxidative phosphorylation — Flashcards

Flashcard 1: Electrons from complex III of the ETC are transferred to _____

Answer: cytochrome C

Flashcard 2: Does electron transport continue with electron transport inhibitors (e.g. CO, CN)? _____

Answer: No

Flashcard 3: Electrons from cytochrome C of the ETC are transferred to complex _____

Answer: IV (Cyto a/a3) (2 names)

Flashcard 4: Does electron transport continue with uncoupling agents (e.g. 2,4-DNP)? _____

Answer: Yes**

Flashcard 5: Electron transport inhibitors cause a _____ proton gradient and block of ATP synthesis

Answer: decreased

Flashcard 6: Which universal electron carrier is used in the cytochrome P-450 system of the liver?_____

Answer: NADPH

Flashcard 7: ATP synthase inhibitors cause a(n) _____ proton gradient and a block of ATP synthesis

Answer: increased

Flashcard 8: FADH2 electrons from the TCA cycle are transferred to _____ of the ETC, also known as succinate dehydrogenase

Answer: complex II

Flashcard 9: Does electron transport continue with ATP synthase inhibitors (e.g. oligomycin)? _____

Answer: No

Flashcard 10: During oxidative phosphorylation, how many ATP are produced per FADH2?

Answer: 1.5 (Classic value: 2)

Extra: According to modern P/O ratios: - NADH produces ~2.5 ATP - FADH2 produces ~1.5 ATP Older textbooks often use the rounded integers 3 and 2 respectively.