Much of the energy released in catabolic reactions is captured in atp for use in other reactions. when the phosphate is transferred directly from an organic molecule to adp in order to produce atp without an energized membrane, what has occurred?
a. substrate-level phosphorylation
b. oxidative phosphorylation
c. noncyclic photophosphorylation
d. cyclic photophosphorylation

A substrate-level phosphorylation

Explanation:

Large amount of energy released in catabolic reactions is captured in ATP for use in other reactions. The conversion of ADP into ATP With transfer of phosphate from ADP without an energized membrane. This process is called  substrate-level phosphorylation.

substrate-level phosphorylation is metabolic reaction in which ADP is converted to ATP by direct transfer of Phosphoryl Group (PO3) to ADP.

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