4
QuizMultiple Choice

Catalysts — Unit test

Question 4 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC

Which statement explains how ATP and its phosphate groups are related to the energy that is used in plant processes?

Answer
A
ADP loses a phosphate group to create ATP, which stores energy for making sugars.
B
ADP gains a phosphate group to create ATP, which stores energy for making sugars.
C
ADP loses a phosphate group to create ATP; this process instantly releases energy for making sugars.
D
ADP gains a phosphate group to create ATP; this process results from sugar production.

Explanation

ADP becomes ATP when it gains a phosphate group. Energy is stored in this process and can later be released when ATP loses a phosphate group, helping power plant processes such as making sugars. So the correct statement is that ADP gains a phosphate group to create ATP, which stores energy for making sugars.

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