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?

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.