An adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are hydrolyzed.Group of answer choicesNAD⁺NADHNADPHATPADP

The adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are hydrolyzed is ATP (Adenosine Triphosphate).

Explanation:

ATP is often referred to as the "energy currency" of the cell. When the high-energy phosphate bonds in ATP are broken by hydrolysis (the addition of water), it releases energy that can be used for various biological processes, such as muscle contraction, nerve impulse propagation, and chemical reactions.

In contrast, NAD⁺, NADH, and NADPH are nucleotide derivatives involved in redox reactions and are not primarily described as energy currency in the same way that ATP is. Therefore, the correct answer is ATP.