NURSING ANM AND GNM

Detailed explanation-1: -PEP is formed by the action of the enzyme enolase on 2-phosphoglyceric acid. Metabolism of PEP to pyruvic acid by pyruvate kinase (PK) generates adenosine triphosphate (ATP) via substrate-level phosphorylation.

Detailed explanation-2: -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.