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NEETBotanyRespiration in Plants

Which of the following sets of enzymes and complexes is exclusively located in or on the inner mitochondrial membrane?

Options

  1. ASuccinate dehydrogenase, Cytochrome c oxidase, ATP synthase
  2. BPyruvate dehydrogenase, Citrate synthase, -ketoglutarate dehydrogenase
  3. CHexokinase, Phosphofructokinase, Pyruvate kinase
  4. DPorins, Enolase, Citrate synthase

Correct answer

A. Succinate dehydrogenase, Cytochrome c oxidase, ATP synthase

Step-by-step solution

Succinate dehydrogenase (Complex II), Cytochrome c oxidase (Complex IV), and ATP synthase (Complex V) are all physically located in the inner mitochondrial membrane. Pyruvate dehydrogenase and most enzymes of the TCA cycle (such as citrate synthase and -ketoglutarate dehydrogenase) are located in the mitochondrial matrix. Enzymes of glycolysis (such as hexokinase, phosphofructokinase, pyruvate kinase, and enolase) are found in the cytoplasm. Porins are large protein channels found in the outer mitochondrial membran

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