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

question 12

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

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