Question #1: (0.8 point) Oxygen, as part of the ETC, is responsible for regenera
ID: 58985 • Letter: Q
Question
Question #1: (0.8 point) Oxygen, as part of the ETC, is responsible for regeneration of FAD and NADP+, which are required to keep the oxidative TCA cycle functioning a.) True b.) False
Question #2: (0.8 point) Conversion of oxaloacetate + acetyl-CoA to citrate:
a.) requires NAD+
b.) requires FAD
c.) produces carbon dioxide
d.) utilizes GTP as an energy source
e.) produces free CoA-SH
Question #3: (0.8 point) The TCA cycle itself is an anaerobic process that requires FAD and NAD+ but does not directly require oxygen.
a.) True b.) False
Question #4: (0.8 point) How many CO2 molecules are produced by pyruvate dehydrogenase and the TCA cycle per molecule of glyceraldehydes-3-phosphate that goes through glycolysis, pyruvate dehydrogenase, and the TCA cycle?
a.) 1 b.) 2 c.) 3 d.) 4 e.)
6 Question #5: (0.8 point) How many NADPH molecules are produced by pyruvate dehydrogenase and the TCA cycle per molecule of phosphoenolpyruvate that goes through glycolysis, pyruvate dehydrogenase, and the TCA cycle?
a.) 3 b.) 4 c.) 6 d.) 8 e.) 0
Explanation / Answer
1. The answer is False, The regeneration of NADP and FAD takes place by donation of electrons to complex I in ETC.
2. The answer is produces free CoA-SH.
3. The answer is False, Krebs cycle is a aerobic process as it can only take place in presence of oxygen because it relies on the by-products of ETC which requires oxygen
4. The answer is 3. For each molecule of Glyceraldehyde-3-phosphate after passing through pyruvate dehydrogenase and TCA cycle 3 molecules of CO2 are produced.
5. The answer is Zero, NADPH molecules are produced in Pentose phosphate shunt pathway.