MCQ on Electron Transport System (ETS) in Cellular Respiration







MCQ on Electron Transport System: The electron transport system, or electron transport chain (ETC), is a series of protein complexes in the inner mitochondrial membrane or thylakoid membrane in chloroplasts. It transfers electrons, generated during cellular respiration or photosynthesis, to generate ATP, a crucial energy currency, by harnessing electron flow for proton pumping and chemiosmotic ATP synthesis.

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The Electron Transport System (ETS) is located in which cellular organelle?

The primary function of the Electron Transport System is to:

The final electron acceptor in the Electron Transport System is:

Which complex of the Electron Transport System pumps protons across the inner mitochondrial membrane?

Which electron carrier is not a part of the Electron Transport System but transfers electrons from the Krebs cycle to the ETS?

In the Electron Transport System, the electrons move through the protein complexes in a series of redox reactions. What is the direction of electron flow?

The energy released during the transfer of electrons in the Electron Transport System is used to pump protons into the:

The proton gradient generated by the Electron Transport System is used to drive the synthesis of ATP through:

The inhibition of which complex of the Electron Transport System would directly prevent the production of ATP?

In the Electron Transport System, Complex II receives electrons from which molecule produced in the Krebs cycle?

The enzyme ATP synthase is responsible for:

The Electron Transport System involves a series of protein complexes that contain redox-active components. Which of the following is not a redox-active component?

Which of the following substances is a product of the Electron Transport System?

The final result of the Electron Transport System is the transfer of electrons to oxygen, leading to the formation of water. This process is coupled to the pumping of protons to generate a proton gradient. What is this process called?

The uncoupling of the Electron Transport System from ATP synthesis leads to the generation of heat. Which protein is responsible for this uncoupling process?

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