What is the primary energy molecule produced during cellular respiration?

• A. Glucose
• B. NADH
• C. Carbon dioxide
• D. ATP

Answer: (D)

Verified step by step guidance

1. Understand the process of cellular respiration, which is a series of metabolic reactions that convert biochemical energy from nutrients into adenosine triphosphate (ATP), and release waste products.
2. Identify the main stages of cellular respiration: glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation. Each stage contributes to the production of ATP.
3. Recognize that ATP (adenosine triphosphate) is the primary energy carrier in cells. It stores energy in its high-energy phosphate bonds, which can be used for various cellular processes.
4. Differentiate ATP from other molecules involved in cellular respiration, such as NADH and carbon dioxide. NADH is an electron carrier that plays a role in transferring electrons to the electron transport chain, while carbon dioxide is a waste product.
5. Conclude that ATP is the primary energy molecule produced during cellular respiration, as it is the main form of energy used by cells to perform work.