What is the primary purpose of cellular respiration?

• To convert nutrients into energy

• To produce oxygen

• To break down carbon dioxide

• To generate glucose

Where does glycolysis occur in the cell?

• Mitochondria

• Nucleus

• Cytoplasm

• Endoplasmic reticulum

How many ATP molecules are produced during the Krebs cycle per glucose molecule?

• 2

• 4

• 6

• 8

What role does oxygen play in the electron transport chain?

• It acts as the final electron acceptor

• It breaks down glucose

• It produces carbon dioxide

• It generates pyruvate

Which stage of cellular respiration produces the most ATP?

• Glycolysis

• Krebs cycle

• Electron transport chain

• Fermentation