Final answer:
The ADP molecule is made up of structures A, B, C, and D, which represent the Adenine base, Ribose sugar molecule, Phosphate group, and an extra phosphate group, respectively.
Step-by-step explanation:
The ADP molecule is made up of A, B, C, and D structures shown in the Figure.
A represents the Adenine base, B represents a Ribose sugar molecule, C represents a Phosphate group, and D represents the extra phosphate group that separates ADP from ATP.
ADP stands for adenosine diphosphate and is an important molecule in cellular energy metabolism.
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