The correct definition of a pathway intermediate is a molecule that
A) is both a product and a reactant in a pathway.
B) lowers the activation energy of a reaction.
C) increases the rate of a reaction.
D) is only a reactant in a pathway.

Question

Quizplus · Accepted Answer

A pathway intermediate is a molecule that is both a product and a reactant in a pathway, meaning it is produced in one step and consumed in another. It is not just a reactant or a product, as option D suggests. Options B and C describe the function of enzymes or catalysts in a pathway, not intermediates.

The Correct Definition of a Pathway Intermediate Is a Molecule