Product of ATP breakdown, releases energy.

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Multiple Choice

Product of ATP breakdown, releases energy.

Explanation:
ATP hydrolysis releases energy as its outer (gamma) phosphate bond is broken, converting ATP into ADP plus inorganic phosphate. This ADP product is the immediate result of ATP breakdown, making it the best answer. The energy released powers cellular work such as muscle contraction and active transport. AMP would only appear if ADP were broken down further, and NADH is a separate energy carrier not a direct product of ATP breakdown. ATP itself is the substrate being broken down, not a product.

ATP hydrolysis releases energy as its outer (gamma) phosphate bond is broken, converting ATP into ADP plus inorganic phosphate. This ADP product is the immediate result of ATP breakdown, making it the best answer. The energy released powers cellular work such as muscle contraction and active transport. AMP would only appear if ADP were broken down further, and NADH is a separate energy carrier not a direct product of ATP breakdown. ATP itself is the substrate being broken down, not a product.

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