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  4. In TCA cycle substrate level phosphorylation takes place during the conversion of

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Q. In TCA cycle substrate level phosphorylation takes place during the conversion of

AMUAMU 2013Respiration in Plants

Solution:

Tricarboxylic acid cycle or citric acid cycle or Krebs cycle takes place in matrix of mitochondria. Acetyl coenzyme-A is connecting link between cycle and EMP pathway, while oxaloacetate is acceptor molecule. Substrate level phosphorylation takes place during the conversion of succinyl Co-A to succinic acid,
Succinyl Co-A + ADP + $ H_{3}PO_{4} \xrightarrow[Co-A\, \text{synthetase}]{\text{Succinyl}} $ succinic acid + ATP + Co-A