MHT CET Medical202621 April 2026Morning ShiftBiologyRespiration in PlantsActual
Substrate level phosphorylation occurs --------------------.
Options
- Ain cytoplasm of the cells only.
- Bon the inner mitochondrial membrane.
- Cin matrix of mitochondria only.
- Din cytoplasm of the cells and matrix of mitochondria.
Correct answer
D. in cytoplasm of the cells and matrix of mitochondria.
Step-by-step solution
Substrate level phosphorylation is the direct synthesis of ATP from ADP by the transfer of a phosphate group from a phosphorylated reactive intermediate. During glycolysis, which takes place in the cytoplasm, substrate level phosphorylation occurs at two steps: the conversion of 1,3 -bisphosphoglycerate to 3 -phosphoglyceric acid and the conversion of phosphoenolpyruvate to pyruvic acid. During the Krebs cycle, which takes place in the mitochondrial matrix, substrate level phosphorylation occurs during the conversi