AP BIOLOGY

Detailed explanation-1: -This is a process seen only in cells capable of photosynthesis. Substrate-level phosphorylation is the production of ATP from ADP by a direct transfer of a high-energy phosphate group from a phosphorylated intermediate metabolic compound in an exergonic catabolic pathway.

Detailed explanation-2: -Substrate-level phosphorylation is a type of chemical reaction that results in the formation of adenosine triphosphate (ATP) by the direct transfer of a phosphate group to adenosine diphosphate (ADP) from a reactive intermediate.

Detailed explanation-3: -Substrate-level phosphorylation, which is a process of forming ATP by the physical addition of a phosphate group to ADP can take place in the cytoplasm during glycolysis or inside the mitochondrial matrix during the Krebs cycle.

Detailed explanation-4: -Substrate-level phosphorylation is when a nucleoside diphosphate (ADP or GDP) is phosphorylated by a substrate to produce a nucleoside triphosphate (ATP or GTP). Oxidative phosphorylation is the phosphorylation of ADP to ATP using the free energy produced from redox reactions in the electron transport chain.