NTA Abhyas NEET2020BotanyRespiration in PlantsPractice
Which of these statements about TCA cycle is false?
Options
- AThere are three points in the cycle where N A D + is reduced to NADH + H + and one point where FAD+ is reduced
- BDuring the conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesized.
- CIt involves condensation of acetyl group with oxaloacetic acid (OAA) and water to yield citric acid
- DIt involves two steps of decarboxylation, one leads to formation of alpha ketoglutaric acid while the other le
Correct answer
D. It involves two steps of decarboxylation, one leads to formation of alpha ketoglutaric acid while the other le
Step-by-step solution
The first step of TCA cycle involves the formation of citric acid as follows: Two decarboxylations occur, one forming alpha ketoglutaric acid while the other forming succinyl-CoA as follows: During the conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesized as follows: NADH + H + is formed during formation of oxalosuccinic acid, succinyl co-A and oxaloacetic acid while FADH2 is formed during the formation of fumaric acid.