Year 13 Bio - Periods 9-10

Where does oxidative phosphorylation take place?

• Cytoplasm

• Outer mitochondrial membrane

• Inner mitochondrial membrane

• Nucleus

What are the molecules that carry electrons in the electron transport chain called?

• ATP synthases

• Electron carriers

• Protons

• Oxygen

What happens to reduced NAD and reduced FAD when they enter the electron transport chain?

• They are reduced.

• They are oxidized.

• They combine with carbon dioxide.

• They form ATP directly.

What happens to the hydrogen atoms that are removed from reduced NAD and reduced FAD?

• They form water.

• They are split into protons (H$^+)andelectrons(e^-).

• They are released as waste gas.

• They are used to make glucose.

Where are the electron carriers located?

• In the intermembrane space.

• In the matrix of the mitochondrion.

• In the inner mitochondrial membrane (cristae).

• In the cytoplasm.

What is the final electron acceptor at the end of the electron transport chain?

• Carbon dioxide

• Hydrogen

• Oxygen

• ATP

What is formed when four electrons recombine with four protons and an oxygen molecule?

• ATP

• Carbon dioxide

• Water

• Glucose

What is the name of the enzyme that uses the energy from protons moving down their concentration gradient to synthesize ATP?

• Electron carrier

• ATP synthase

• Oxidase

• Dehydrogenase

According to Table 12.1, how many ATP molecules are made during oxidative phosphorylation?

• 2

• 4

• 28

• 32

Which stage of aerobic respiration produces the most ATP?

• Glycolysis

• Link reaction

• Krebs cycle

• Oxidative phosphorylation