Which Molecule Powers the Chemical Work Within Cells

Question

Which molecule powers the chemical work within cells?
A) NAD⁺
B) NADPH
C) CO₂
D) ATP

Accepted Answer

ATP (adenosine triphosphate) is the molecule that powers the chemical work within cells. It is used as an energy source for various cellular processes such as metabolism, muscle contraction, and active transport. NAD⁺ and NADPH are important molecules involved in cellular redox reactions, while CO₂ is a waste product of cellular respiration.