Q. All enzymes of the TCA cycle are located in the mitochondrial matrix except one which is located in the inner mitochondrial membranes in eukaryotes and in the cytosol in prokaryotes. This enzyme is :

Q. All enzymes of the TCA cycle are located in the mitochondrial matrix except one which is located in the inner mitochondrial membranes in eukaryotes and in the cytosol in prokaryotes. This enzyme is :

(a) Isocitrate dehydrogenase

(b) Ketoglutarate dehydrogenase

(c) Succinate dehydrogenase

(d) Lactate dehydrogenase

Solution :

Correct option : C Explanation of correct option : 1.Succinate dehydrogenase helps in the conversion of succinate to fumarate during the Krebs cycle. 2. It simultaneously reduces ubiquinone to ubiquinol. 3.It facilitates energy generation and cellular respiration. 4.Succinate dehydrogenase is located in the inner mitochondrial membrane in eukaryotes and in the cytosol region in prokaryotes.