Which components make up the structure of an ATP (adenosine triphosphate) molecule?

• A. Cytosine, ribose, and one phosphate group
• B. Guanine, deoxyribose, and two phosphate groups
• C. Thymine, ribose, and three phosphate groups
• D. Adenine, ribose, and three phosphate groups

Answer: (D)

Verified step by step guidance

1. Understand that ATP (adenosine triphosphate) is a molecule used by cells to store and transfer energy.
2. Break down the structure of ATP into its three main components: a nitrogenous base, a sugar, and phosphate groups.
3. Identify the nitrogenous base in ATP as adenine, which is a purine base.
4. Recognize the sugar in ATP as ribose, a five-carbon sugar that forms part of the backbone of the molecule.
5. Note that ATP contains three phosphate groups attached in a chain, which are key to its role in energy transfer within cells.