the hydrogen from cytoplasmic NADH to mitochonoria Choose one correct answer: 2. Reactions of aerobie glucose breakdown occur A. only in the cytosol B. only in mitochondria C. in the cytosol and mitochondria D. in lysosomes E. in the endoplasmic reticulum 3. Glucose {}^14C at 1^st position was incubated in a medium containing enzymes from the pentose phosphate pathway. The label was found in A. CO_(2) B. ribulose .5-phosphate C. ribose-s - phosphate D. xylulose . 5-phosphate E. none of the above 4. The dehydrogenation reaction of the substrate in the Krebs cycle occurs during the conversion: A. citrate-cis -aconitate B. isocitrate -a-ketoglutarate C. succinyl-CoA -I succinate D. fumarate -malate E. cis-aconitate isocitrate 5. Synthesis of ATP not coupled with electron transfer by respiratory chai enzymes, is called: A. common catabolic pathway B. tissue respiration C. free oxidation D. substrate-level phosphorylation E. oxidative phosphorylation Select all the correct answers: 6. FAD is a coenzyme for: A. succinate dehydrogenase B. pyruvate dehy drogenase c a-ketoglutarate dehydrogenase D. fumarase E. isocitrate dehydrogenase