Electron Transport Chain Quiz

What is the primary role of the electron transport chain in cellular respiration?

• To break down glucose into pyruvate

• To generate a proton gradient for ATP production

• To convert ADP directly into ATP

• To transport oxygen into the cell

Which component acts as a mobile electron carrier between complexes in the electron transport chain?

• ATP synthase

• Ubiquinone

• Cytochrome b-c1

• NADH dehydrogenase

During electron transfer, which complex accepts electrons one at a time?

• Cytochrome oxidase

• Cytochrome c

• ATP synthase

• NADH dehydrogenase

In the cytochrome oxidase complex, how many electrons are required to interact with molecular oxygen?

• Two

• Three

• Four

• Five

What is formed when electrons, hydrogen ions, and molecular oxygen interact in the cytochrome oxidase complex?

• NADH

• Water

• Carbon dioxide

• Glucose