18
QuizMultiple Choice

Organisms and Energy — Test

Question 18 • Biology

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

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

Explanation

ADP becomes ATP when it gains a phosphate group, and energy is stored in that added phosphate bond. The plant can later use ATP’s stored energy for processes such as making sugars. Losing a phosphate from ATP releases energy, but it does not create ATP, so choices B and C reverse the process.

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