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Sourav Pan
12 Dec 2024

Where is the electron transport chain located?

The ETC is located in the inner mitochondrial membrane in eukaryotes. This membrane separates the mitochondrial matrix from the intermembrane space. The location is critical because the membrane’s impermeability to protons allows the establishment of a proton gradient. In prokaryotes, the chain is found in the plasma membrane, where it serves a similar function in … Read more

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Avatar for Sourav Pan
Sourav Pan
12 Dec 2024

What is the role of oxygen in the electron transport chain?

Oxygen acts as the final electron acceptor in the electron transport chain. After electrons have been passed through the protein complexes, they are transferred to oxygen, which reacts with free protons to form water. This step is crucial because it ensures the continuation of electron flow through the chain, preventing a bottleneck that would halt … Read more

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Avatar for Sourav Pan
Sourav Pan
12 Dec 2024

Where in the cell do the Krebs cycle and electron transport chain occur?

The Krebs cycle occurs in the mitochondrial matrix, the innermost compartment of the mitochondrion, where enzymes for the cycle are located. The electron transport chain, in contrast, is embedded in the inner mitochondrial membrane. This spatial separation allows the products of the Krebs cycle, NADH and FADH2, to feed electrons directly into the chain for … Read more

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