Electron Transport Chain and Chemiosmosis

What is the structure of the electron transport chain?

• Network of nerve cells

• Series of protein complexes and mobile electron carriers

• Chain of DNA molecules

• String of amino acids

Explain the function of cytochrome c in the electron transport chain.

• Regulating the flow of protons in complex II

• Producing ATP in complex I

• Transferring electrons from complex III and complex IV

• Transferring electrons between complex I and II

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Describe the process of chemiosmosis in cellular respiration.

• Proton gradient is used to generate ATP in the inner mitochondrial membrane through the action of ATP synthase.

• Proton gradient is used to oxidize glucose in the inner mitochondrial membrane through the action of ATP synthase.

• Chemiosmosis is the process of converting Oxygen into carbon dioxide during cellular respiration.

• Chemiosmosis is the process of breaking down ATP to release energy for cellular activities.

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Name the electron carriers involved in the electron transport chain. _ and _

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How is the proton gradient formed in the electron transport chain?

• Pumping of protons across the inner mitochondrial membrane

• Diffusion of protons through the inner mitochondrial membrane

• Release of protons from the electron carriers

• Transport of protons by ATP synthase

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What is the significance of the electron transport chain in cellular respiration?

• It regulates the body temperature

• It is essential for the production of ATP during cellular respiration.

• It is responsible for the synthesis of DNA

• It helps in the breakdown of carbohydrates

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Explain the relationship between electron transport chain and ATP production.

• The electron transport chain transfers electrons, which causes a proton gradient to drive ATP synthesis

• ATP production is unrelated to the movement of electrons in the electron transport chain

• The electron transport chain creates water which releases ATP

• The electron transport chain has no relationship with ATP production

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By which process is ATP made in chemiosmosis?

• substrate level phosphorylation

• enzymatic redox

• oxidative phosphorylation.

• reduction

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How many ATP are made in chemiosmosis?

• 2-4

• 4-8

• 20-24

• 26-28

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Mammals use _ as the final electron acceptor in the ETC. A bacteria has an ETC embedded into it's membrane, but uses sulfur as the final electron accepter. This bacteria is considered _.

• water, aerobic

• oxygen, anaerobic

• water, anaerboic

• oxygen, aerobic

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