Anaerobic Respiration - Electron Transport Chain

What is the primary role of the electron transport chain?

• To break down fatty acids

• To transport oxygen

• To produce glucose

• To generate ATP

Which molecule is oxidized to release electrons into the protein complexes?

• NADH

• Glucose

• FADH2

• Oxygen

What is the function of ATP synthase in chemiosmosis?

• To transfer electrons

• To phosphorylate ADP into ATP

• To pump hydrogen ions

• To oxidize NADH

How many ATP molecules are produced from one NADH during aerobic respiration?

• 1 ATP

• 4 ATP

• 2 ATP

• 3 ATP

What is the reduced form of ubiquinone called?

• Cytochrome

• Semiquinone

• Ubiquinone

• Ubiquinol

Which complex receives electrons from FADH2?

• Complex IV

• Complex III

• Complex II

• Complex I

What is formed when oxygen binds to reduced cytochromes?

• Water

• Carbon dioxide

• Peroxide bridge

• ATP

What is the total ATP yield from the electron transport chain and chemiosmosis?

• 30 ATP

• 34 ATP

• 38 ATP

• 36 ATP

Which complex contains cytochrome b?

• Complex IV

• Complex I

• Complex II

• Complex III

What happens to hydrogen ions during the electron transport chain?

• They are consumed

• They are pumped into the matrix

• They are pumped into the intermembrane space

• They are converted to water