Biochemistry Quiz

What is the final electron acceptor in the ETC?

• NAD+

• CO₂

• Oxygen

• Glucose

Where does oxidative phosphorylation occur in eukaryotic cells?

• Cytoplasm

• Outer mitochondrial membrane

• Inner mitochondrial membrane

• Nucleus

Complex I is also known as:

• Cytochrome c oxidase

• NADH dehydrogenase

• ATP synthase

• Coenzyme Q reductase

Coenzyme Q is unique because it is:

• Hydrophilic

• Protein-bound

• Lipid-soluble and not protein-bound

• A carbohydrate

Complex II is also part of:

• Glycolysis

• Pentose phosphate pathway

• Citric acid cycle

• Beta-oxidation

The energy used by ATP synthase to generate ATP comes from:

• Electron flow

• Oxygen

• Proton gradient

• NADH

One molecule of NADH leads to the movement of how many H⁺ ions?

• 4

• 6

• 8

• 10

Cytochromes transfer electrons using:

• FAD

• Fe in heme groups

• CoQ

• Mg²⁺

ATP synthase complex is also known as:

• Complex III

• Complex IV

• Complex V

• Complex II

Which vitamin is essential for FMN and FAD synthesis?

• Vitamin C

• Riboflavin

• Niacin

• Biotin