Question

multiple choice question
in a metabolic pathway, the ____ of one chemical reaction becomes the ____ of the next reaction in the pathway.
product; enzyme
substrate; product
enzyme; substrate
product; substrate
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Explanation:

In a metabolic pathway, a series of chemical reactions occur in sequence. The product of one reaction serves as the starting - material (substrate) for the next reaction in the pathway. Enzymes catalyze these reactions but are not the product - substrate relationship described here.

Answer:

D. product; substrate