Which of the following terms describes ATP synthesis in mitochondria?
A) substrate-level phosphorylation
B) oxidative phosphorylation
C) photophosphorylation

Question

Quizplus · Accepted Answer

Oxidative phosphorylation is the process by which ATP is synthesized in mitochondria from the energy released by the oxidation of nutrients, mainly glucose and fatty acids. This process involves electron transport through the inner mitochondrial membrane and ATP synthase, which synthesizes ATP from ADP and Pi. Substrate-level phosphorylation refers to ATP synthesis through the transfer of a phosphate group from a substrate molecule to ADP, but this process occurs mainly in the cytosol during glycolysis, and it is not the primary mechanism of ATP synthesis in mitochondria. Photophosphorylation is the process by which ATP is synthesized in chloroplasts during photosynthesis, and it involves the absorption of light energy by pigments and the transfer of electrons through a series of electron carriers. This process is not relevant to ATP synthesis in mitochondria.

Which of the Following Terms Describes ATP Synthesis in Mitochondria