Mitochondria Quiz 2

What is the primary role of mitochondria in eukaryotic cells?

• To store genetic information

• To produce ATP

• To synthesize proteins

• To produce glucose

How are most mitochondrial proteins transported into mitochondria?

• Via protein translocator complexes

• Through nuclear pores

• Through vesicles

• By simple diffusion

What is the function of the cristae in mitochondria?

• To synthesize lipids

• To store calcium ions

• To transport proteins

• To increase surface area for electron transport

Which complex accepts electrons from succinate?

• Complex II

• Complex I

• Complex III

• Complex IV

What is the final electron acceptor in the electron transport chain?

• Water

• FAD

• Oxygen

• NAD+

What is the proton-motive force?

• The movement of electrons through the electron transport chain

• The energy required to transport proteins

• The gradient of protons across the inner membrane

• The force that drives ATP synthesis

What role does the F0 component of ATP synthase play?

• It binds and releases protons

• It synthesizes ATP

• It transports electrons

• It oxidizes glucose

How is ATP transported across the inner mitochondrial membrane?

• Through nuclear pores

• Through simple diffusion

• Via an ATP-ADP carrier

• By vesicular transport

Where are mitochondria typically distributed in cells?

• In the extracellular matrix

• Near sites of high ATP demand

• Near the nucleus

• In the cytosol

What is associated with the early stages of programmed cell death?

• Increased glucose uptake

• Decreased protein synthesis

• Alterations in mitochondrial membrane permeability

• Increased ATP production