MCQ on Proton Gradient and ATP Synthesis




A proton gradient is a difference in proton concentration across a membrane, created by the electron transport chain. ATP synthesis occurs when protons flow back across the membrane through ATP synthase, using the energy from this gradient to convert ADP and inorganic phosphate into ATP. This article is on Proton Gradient and ATP Synthesis explained in an MCQ format.

1. 
Where is the proton gradient established during cellular respiration in eukaryotic cells?

2. 
What is the primary purpose of the proton gradient in mitochondria?

3. 
Which enzyme synthesizes ATP using the proton gradient?

4. 
Protons are pumped across the inner mitochondrial membrane during the electron transport chain to which compartment?

5. 
Which complexes of the electron transport chain contribute to the creation of the proton gradient?

6. 
What is the direction of proton flow through ATP synthase during ATP synthesis?

7. 
What role does oxygen play in the electron transport chain?

8. 
In which process is the proton gradient across the thylakoid membrane utilized?

9. 
Which part of ATP synthase is responsible for the actual synthesis of ATP?

10. 
How many protons are typically required to produce one molecule of ATP in mitochondria?



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Proton Gradient and ATP Synthesis

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