In certain metabolic pathways, a number of enzymes are required. These multienzyme complexes occur enclosed in the

Membrane.

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Area within ATP.

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Microbodies.

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Endoplasmic reticulum.

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Solution

The correct option is B Membrane.
Most eukaryotic cells have mitochondria, which produce ATP from the products of the citric acid cycle, amino acid oxidation. four membrane-bound complexes are found in the membrane of mitochondria which helps in cellular respiration process. Each complex is an extremely transmembrane structure that is embedded in the inner membrane. For example, succinate dehydrogenase, cytochrome c oxidase.
So the correct answer is A.

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