Quiz on Respiration and Energy Transfers

What is the first stage of aerobic respiration?

• Glycolysis

• Link reaction

• Krebs cycle

• Oxidative phosphorylation

Where does glycolysis occur?

• Cytoplasm

• Chloroplast

• Mitochondrial matrix

• Nucleus

What is produced during the Krebs cycle?

• Reduced coenzymes

• Lactate

• Oxygen

• Glucose

What is the final electron acceptor in the electron transport chain?

• Carbon dioxide

• Oxygen

• FAD

• NAD

What is the main purpose of oxidative phosphorylation?

• To produce glucose

• To synthesize ATP

• To generate pyruvate

• To release carbon dioxide

What happens to pyruvate in anaerobic respiration in animals?

• It is oxidized to acetate

• It is converted to acetyl CoA

• It is converted to lactate

• It is converted to ethanol

How many ATP molecules are produced from one glucose molecule in aerobic respiration?

• 36

• 2

• 32

• 38

What is the role of chemiosmosis in respiration?

• To oxidize NAD

• To pump protons across the membrane

• To transport glucose

• To produce pyruvate

What is substrate-level phosphorylation?

• Oxidation of fatty acids

• Production of ATP without an electron transport chain

• Conversion of glucose to pyruvate

• Production of ATP using oxygen

What is the main product of glycolysis?

• Lactate

• Ethanol

• Pyruvate

• Acetyl CoA