In a Certain Enzyme-Catalyzed Reaction the Following Steps Occur: 1

Multiple Choice

In a certain enzyme-catalyzed reaction the following steps occur: 1. A phosphate group on substrate A is transferred to a side chain of an active
Site residue of the enzyme.
2. The dephosphorylated form of substrate A dissociates from the enzyme.
3. Substrate B enters the active site and is phosphorylated with simultaneous
Regeneration of the enzyme in its original form.
What kind of kinetic mechanism is described?

A) Random.
B) Sequential.
C) Ordered.
D) Ping-pong.