During cellular respiration, which molecule acts as the primary energy carrier to power cellular processes?

Prepare for the NLN PAX Science Exam with flashcards and multiple choice questions. Each question includes hints and detailed explanations to boost your confidence and exam readiness.

Multiple Choice

During cellular respiration, which molecule acts as the primary energy carrier to power cellular processes?

Explanation:
Energy for cellular work is stored in ATP, the molecule that acts as the cell’s energy currency. ATP has high-energy bonds between its phosphate groups; when the terminal phosphate is removed, energy is released to power processes such as muscle movement, active transport, and biosynthesis. NADH and FADH2 are carriers that shuttle electrons to the electron transport chain to help make ATP, but they don’t directly power cellular activities themselves. Glucose serves as the fuel that’s broken down to ultimately produce ATP, not the immediate energy carrier.

Energy for cellular work is stored in ATP, the molecule that acts as the cell’s energy currency. ATP has high-energy bonds between its phosphate groups; when the terminal phosphate is removed, energy is released to power processes such as muscle movement, active transport, and biosynthesis. NADH and FADH2 are carriers that shuttle electrons to the electron transport chain to help make ATP, but they don’t directly power cellular activities themselves. Glucose serves as the fuel that’s broken down to ultimately produce ATP, not the immediate energy carrier.

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