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NEET 2020
Exam
NEET
Year
2020
Subject
Botany
Chapter
Respiration in Plants

NEET 2020 · Botany · Respiration in Plants

The number of substrate-level phosphorylation in one turn of citric...

The number of substrate-level phosphorylation in one turn of citric acid cycle is:

Options

  1. AOne
  2. BTwo
  3. CThree
  4. DZero

Correct answer

A. One

Step-by-step solution

Substrate-level phosphorylation: In the presence of the enzyme succinyl CoA synthetase or succinyl thiokinase, succinyl CoA is converted into succinate, producing GTP as the source of energy. This GTP then in the presence of phosphokinase gets converted into ATP.

SuccinylCoA+GDP+Pi→SuccinylCoAsynthetase/SuccinylthiokinaseSuccinate+GTP+CoASuccinylCoA + GDP + Pi\overset{SuccinylCoAsynthetase / Succinylthiokinase}{\to}Succinate + GTP + CoA

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