Which statement about ATP is true?

Which statement about ATP is true?

• A. ATP stores genetic information.
• B. ATP provides energy for cellular functions.
• C. ATP is a structural protein.
• D. ATP regulates ion channels.

Answer: (B)

ATP is the energy currency of the cell. When its terminal phosphate is released, energy is liberated to power activities like active transport, muscle contraction, and biosynthetic reactions. This energy can then be replenished by regenerating ATP from ADP and inorganic phosphate, keeping cellular processes running. This fundamental role distinguishes ATP from storing genetic information (that’s what DNA/RNA do) and from being a structural protein (proteins are built from amino acids). While ATP can influence signaling in some contexts, its universal, core job is to provide energy for cellular functions.

ATP is the energy currency of the cell. When its terminal phosphate is released, energy is liberated to power activities like active transport, muscle contraction, and biosynthetic reactions. This energy can then be replenished by regenerating ATP from ADP and inorganic phosphate, keeping cellular processes running. This fundamental role distinguishes ATP from storing genetic information (that’s what DNA/RNA do) and from being a structural protein (proteins are built from amino acids). While ATP can influence signaling in some contexts, its universal, core job is to provide energy for cellular functions.