Question

Energy is released to be used by a cell when a phosphate group is

A. removed from ADP to form ATP
B. added to ADP to form ATP
C. removed from ATP to form ADP
D. added to ATP to form ADP

What type of molecule do animal cells use for long-term energy storage?

A. Starch
B. Sugar
C. ADP
D. Fat

The immediate source of energy that powers a cell’s activities is

A. adenosine triphosphate
B. food
C. adenosine diphosphate
D. sugar