A Series of Enzymes Catalyze the Reaction X → Y

question 66

Multiple Choice

A series of enzymes catalyze the reaction X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme.
-With respect to the enzyme that converts X to Y, substance A functions as

• A) a coenzyme.
• B) an allosteric inhibitor.
• C) the substrate.
• D) an intermediate.
• E) a competitive inhibitor.

---

Definitions:

Psychological First Aid

Immediate assistance provided to individuals experiencing psychological distress following a crisis or emergency.

Critical Incident Stress Management

A comprehensive system designed to prevent and address the psychological impact of critical incidents on individuals, particularly emergency service workers.

Psychological First Aid

An approach to help people affected by an emergency, disaster, or trauma to address their immediate psychological needs.

Play Therapy

A therapeutic approach that uses play to help children express their emotions, experiences, and feelings, facilitating the resolution of psychological difficulties.