Question

Conversion of phosphoenol pyruvic acid to pyruvic acid and ADP to ATP are examples of _______.

• A. Photophosphorylation
• B. Oxidative phosphorylation
• C. Photoelectric phosphorylation
• D. Substrate level phosphorylation

Answer 1

The correct option is D Substrate level phosphorylation

$PEP+ADP\to pyruvicacid+ATP$
During the conversion of phophoenol pyruvate (PEP) to pyruvic acid, the phosphate group from PEP is transferred to ADP. Therefore it is substrate level phosphorylatron. In oxidative phophorylation, the electrons from high energy carirer travel along an ETC, and finally to an external electron acceptor, that is oxygen. The energy from this process is used to synthesize ATP. Hence known as the oxidative phosphorylation.