A Series of Enzymes Catalyze the Reactions in the Metabolic

question 6

Multiple Choice

A series of enzymes catalyze the reactions in the 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. With respect to the enzyme that converts X to Y, substance A functions as ________.

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

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Definitions:

Without Replacement

A sampling method where once an item is selected, it is not put back into the population for potential reselection.

Consecutive Red Cards

In card games or sports like soccer, instances where red cards are issued in sequential order, either to players or as drawn cards from a deck.

Black Card

Often refers to a high-tier, exclusive credit card that offers extensive benefits and is typically invitation-only.

Record

To capture and store information for future use or to denote an all-time high or low measurement in a specific context.