Question

The direct formation of ATP by the transfer of a phosphate group from a donor molecule to ADP is called ________. A. indigenous phosphorylation B. substrate-level phosphorylation C. noncyclic photophosphorylation D. oxidative phosphorylation E. cyclic photophosphorylation

Answer 1

B. substrate-level phosphorylation

Step-by-step explanation:

Substrate-level phosphorylation is the metabolic reaction which results in formation of the energy currency molecules, ATP (or can be GTP) by direct transfer of the phosphoryl group to the ADP (or GDP) from other phosphorylated compound.

Thus,

ADP + Pi ⇒ ATP