How does ATP supply energy for cellular activities?

• A. By converting into ADP and releasing carbon dioxide
• B. By releasing a phosphate group through hydrolysis
• C. By forming a covalent bond with glucose
• D. By directly transferring electrons to the electron transport chain

Answer: (B)

Verified step by step guidance

1. Understand that ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various cellular processes.
2. Recognize that ATP consists of three phosphate groups, and the bonds between these phosphate groups store potential energy.
3. Learn that the process of hydrolysis involves breaking the bond between the second and third phosphate groups in ATP, resulting in the formation of ADP (adenosine diphosphate) and an inorganic phosphate (Pi).
4. Realize that the breaking of this bond releases energy, which can then be used by the cell to perform work, such as muscle contraction, active transport, or chemical synthesis.
5. Note that this release of energy through the hydrolysis of ATP is a common mechanism by which cells power various biological functions.