Ch. 7 Understanding Cellular Respiration

Which molecule is the primary energy currency of the cell produced during cellular respiration?

• Glucose

• ATP

• NADH

• Pyruvate

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What is the main purpose of fermentation in cells?

• To produce oxygen

• To break down fatty acids

• To synthesize proteins

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Which organelle is primarily responsible for aerobic cellular respiration in eukaryotic cells?

• Nucleus

• Mitochondrion

• Ribosome

• Chloroplast

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What is the final electron acceptor in the electron transport chain during aerobic respiration?

• Oxygen

• Carbon dioxide

• Glucose

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Which process occurs in the cytoplasm and breaks down glucose into two molecules of pyruvate?

• Krebs cycle

• Glycolysis

• Electron transport chain

• Fermentation

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Which of the following is a product of lactic acid fermentation?

• Ethanol

• Lactic acid

• Acetyl-CoA

• Oxygen

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How many net ATP molecules are produced from one molecule of glucose during glycolysis?

• 2

• 4

• 6

• 8

Which of the following best describes the role of NADH in cellular respiration?

• It acts as a structural protein

• It carries electrons to the electron transport chain

• It breaks down glucose

• It forms the cell membrane

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Which stage of cellular respiration produces the most ATP?

• Glycolysis

• Krebs cycle

• Electron transport chain

• Fermentation

What is the main difference between aerobic and anaerobic respiration?

• Use of glucose

• Presence or absence of oxygen

• Production of water

• Location in the cell

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