What happens if there are holes in the inner membrane of mitochondria?

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Prepare for the Biology Test on Energy, Enzymes, Cellular Respiration, Photosynthesis, and Metabolic Pathways with flashcards and multiple-choice questions. Gain insights with detailed hints and explanations to excel in your exam.

Multiple Choice

What happens if there are holes in the inner membrane of mitochondria?

Explanation:
The question tests how the proton gradient across the inner mitochondrial membrane drives ATP production. Electron transport pumps protons from the matrix into the intermembrane space, building a proton-motive force (electrochemical gradient) that powers ATP synthase to convert ADP to ATP as protons flow back into the matrix. If holes appear in the inner membrane, protons would leak back into the matrix, collapsing this gradient. Without a maintained proton-motive force, ATP synthase cannot function, and the energy source driving the electron transport chain is lost too, so both ATP production and the ongoing electron transport would stop.

The question tests how the proton gradient across the inner mitochondrial membrane drives ATP production. Electron transport pumps protons from the matrix into the intermembrane space, building a proton-motive force (electrochemical gradient) that powers ATP synthase to convert ADP to ATP as protons flow back into the matrix. If holes appear in the inner membrane, protons would leak back into the matrix, collapsing this gradient. Without a maintained proton-motive force, ATP synthase cannot function, and the energy source driving the electron transport chain is lost too, so both ATP production and the ongoing electron transport would stop.

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