ETC Quiz

Where does the Electron Transport Chain take place in eukaryotic cells?

• Cytoplasm

• Ribosome

• Mitochondria

• Rough ER

Where does oxidative phosphorylation occur in prokaryotic cells?

• nucleoid

• cytoplasm

• ribosome

• plasma membrane

Where are protons pumped during oxidative phosphorylation?

• Inside the mitochondria/cell

• outside the mitochondria/cell

What is the source of electrons at the beginning of the ETS?

• O2

• ATP

• NADH

• pyruvate

What is the final electron acceptor in the ETC in aerobic respiration?

• NADH

• ATP

• Oxygen

• Hydrogen

How would you describe the electron movement between components of the ETC?

Where is the energy coming from that pumps protons across the membrane?

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What is the name of the enzyme that pumps protons back into the cell/mitochondria?

Flow of protons down the concentration gradient provides energy for the synthesis of what?

• ADP

• NADH

• H2O

• ATP

Electron energy ______ as they move through the ETC.