Q. All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is
A) isocitrate dehydrogenase
B) malate dehydrogenase
C) succinate dehydrogenase
D) lactate dehydrogenase
Explanation
[Solution from source] Succinate dehydrogenase is bound to the inner mitochondrial membrane, where it also forms complex II of the electron transport chain. Lactate dehydrogenase is not a Krebs cycle enzyme at all, and the other dehydrogenases are in the matrix. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.