MCQ on Electron Transport System for NEET 2024




The electron transport system (ETS) is a series of protein complexes and electron carriers in the inner mitochondrial membrane that transfer electrons from NADH and FADH2 to oxygen, producing water. This process generates a proton gradient that drives ATP synthesis through oxidative phosphorylation. This is an MCQ on Electron Transport System for NEET 2024 Examination.

1. 
Where does the electron transport system (ETS) take place in eukaryotic cells?

2. 
What is the final electron acceptor in the electron transport chain?

3. 
What is produced as a result of the reduction of the final electron acceptor in the ETS?

4. 
Which molecule donates electrons to Complex I of the electron transport chain?

5. 
Which complex of the electron transport chain does NOT pump protons across the mitochondrial membrane?

6. 
What is the main function of the proton gradient established by the electron transport chain?

7. 
Which enzyme uses the proton gradient to produce ATP?

8. 
How many ATP molecules are approximately produced from one molecule of NADH during oxidative phosphorylation?

9. 
What role does cytochrome c play in the electron transport chain?

10. 
Which of the following inhibits the electron transport chain by blocking the transfer of electrons from Complex IV to oxygen?



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