Question

What is the energy currency of the cell?

• A. Fat
• B. Protein
• C. ADP
• D. ATP

Hint:

ATP (adenosine triphosphate) is the primary energy currency of cells because it can store and release energy efficiently through its phosphate bonds. This makes ATP crucial for powering cellular activities.

Answer 1

The Correct Option is D

Step 1: Understand Cellular Energy Currency. The primary energy currency of cells is adenosine triphosphate (ATP). ATP is a high-energy molecule that stores and releases energy in cells through its chemical bonds. Cells use ATP to power various cellular processes, such as muscle contraction, active transport, and biosynthesis. Step 2: Analyze Each Option.
Option (1): Fat — Incorrect, as fats are stored energy sources but not the primary energy currency of cells.
Option (2): Protein — Incorrect, as proteins are essential macromolecules involved in structure and function but not the direct energy currency.
Option (3): ADP — Incorrect, as ADP (adenosine diphosphate) is a product of ATP hydrolysis and does not serve as the primary energy currency.
Option (4): ATP — Correct, as ATP is the universal energy currency of cells. Step 3: Final Answer. $$ (4) \mathbf{\text{ATP}} $$