1. In a mitochondrion, the TCA cycle cannot continue on indefinitely without oxy
ID: 1048109 • Letter: 1
Question
1. In a mitochondrion, the TCA cycle cannot continue on indefinitely without oxygen because the electron transport chain will be incapable of oxidizing NADH and FADH2.
a.) True
b.) False
2. Electron transfer cannot occur in the electron transport chain when the pH gradient is abolished.
a.) True
b.) False
3. The Fe-S clusters in the ETC accept both electrons and protons from the preceding step.
a.) True
b.) False
4. NADH would still result in 2.5 ATP being formed by the ETC if Fe-S clusters were not part of it.
a.) True
b.) False
Explanation / Answer
For the electron transport chain in biochemistry, the true and false statements relevant to the process as shown below would be,
1. In a mitochondrion, the TCA cycle cannot continue on indefinitely without oxygen because the electron transport chain will be incapable of oxidizing NADH and FADH2.
a) True
2. Electron transfer cannot occur in the electron transport chain when the pH gradient is abolished.
a) True
3. The Fe-S clusters in the ETC accept both electrons and protons from the preceding step.
a) True
FeS cluster can accept or donate electrons easily in a one on one step process.
4. NADH would still result in 2.5 ATP being formed by the ETC if Fe-S clusters were not part of it.
b) False
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