🎓 IB Exam Prep

How does the structure of ATP contribute to its role as an energy currency in cells?

A It has a stable, unreactive phosphate bond.
B Its three phosphate groups are held by high-energy bonds, readily releasing energy upon hydrolysis.
C It can be directly used as a building block for DNA.
D It acts as an enzyme to catalyze metabolic reactions.

✓ Correct Answer: Option B

ATP stores energy in the bonds between its phosphate groups. Hydrolysis of the terminal phosphate bond releases a significant amount of energy, making it available for cellular processes.

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