CELL RESPIRATION
STRUCTURE OF THE MITOCHONDRION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glycolysis
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Link Reaction
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Krebs Cycle
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ETC
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Detailed explanation-1: -The pH of the intermembrane space is about 7.0, whereas the pH of the matrix is about 8.0.
Detailed explanation-2: -The ETC is a collection of proteins bound to the inner mitochondrial membrane and organic molecules, which electrons pass through in a series of redox reactions, and release energy. The energy released forms a proton gradient, which is used in chemiosmosis to make a large amount of ATP by the protein ATP-synthase.
Detailed explanation-3: -This means that the protons need to be pumped across the inner mitochondrial membrane into the intermembrane space. This results in the intermembrane space having the lowest pH in the mitochondria, due to the high proton concentration.
Detailed explanation-4: -The electron transport chain receives electrons from NADH and FADH2 in the mitochondrial matrix, which results from the previous stages of cellular respiration. NADH and FADH2 are oxidized into NAD+ and FAD+, while the proteins in the electron transport chain are reduced.