Please Use the Following Information to Answer the Question(s) Below

question 14

Multiple Choice

Please use the following information to answer the question(s) below.
A series of enzymes catalyze the reactions illustrated in the following metabolic pathway: 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.
-What is substance X?

• A) a coenzyme
• B) an allosteric inhibitor
• C) an intermediate
• D) a substrate

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Definitions:

Butterflies

Light, fluttery sensations in the stomach, often as a response to nervousness or excitement.

Gentle Music

Soothing and calm music intended to relax the mind, reduce anxiety, and promote a peaceful state of being.

Tactile Hallucinations

False perceptions or sensations of touch or movement on the body, without an external cause.

Burning Sensations

A painful feeling of heat often experienced in parts of the body, like when touching something very hot or during certain medical conditions.