Where does the respiratory chain exist in eukaryotic cells?

Acytoplasm
Bnucleus
Cmitochondria
Dperoxisomes

Correct answer: C. mitochondria

Mitochondria contain various enzymes and cofactors required for oxidative phosphorylation. The cytoplasm is involved in substance transport, information transmission, and multiple metabolic reactions such as glycolysis, gluconeogenesis, and synthetic metabolism. The nucleus stores, replicates, and transcribes genetic material, controlling cellular genetics and various metabolic activities. Peroxisomes contain a rich variety of enzymes including oxidases, catalase, and peroxidase that can catalyze the β-oxidation of fatty acids and decomposition of H2O2.

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