19-20 Cytochromes are respiratory proteins. Which of the following statements ac

Question

19-20

Cytochromes are respiratory proteins. Which of the following statements accurately reflects their true nature? A) Cytochrome proteins reside free in the lung cells of all vertebrates. These molecules contain a heme group with an iron atom at its center. B) Cytochrome proteins reside in the mitochondria and are specifically associated with the electron transport system. C) Cytochrome proteins reside in the mitochondria and are specifically associated with the Krebs. D) Cytochrome proteins reside in the mitochondria and are specifically associated with glycolysis. Isocitrate dehydrogenase is an enzyme of the citric acid cycle. Where in the cell is this enzyme located? A) In the thylakoids. B) In the cytoplasm. C) In the chloroplast D) In the mitochondrial matrix. E) In the plasma membrane.

Explanation / Answer

19. Answer is option B. Cytochrome protein reside in the mitochondria and are specifically associated with the electron transport system.

Cytochrome oxidase enzyme play a central role in electron transport system.

20. Correct answer is option D. Mitochondrial matrix.

Isocitrate dehydrogenase catalyses the reversible conversion of isocitrate to alpha keto glutarate and carbondioxide

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