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- Which of the following pathways requires molecular oxygen (O2)? a. aerobic respiration b. lactate formation c. alcoholic fermentation d. photosynthesisWhen NAD becomes NADH, the coenzyme has been________.a. reducedb. oxidizedc. metabolizedd. hydrolyzedCitrulline is one metabolite whose levels are “out of range.” The unusual levels of citrulline could be explained bythe loss of function of which enzyme? Draw the reaction catalyzed by this enzyme.
- Energy is carried from catabolic to anabolic reactions in the formof ________________ .a. ADP b. high-energy ATP bonds c. coenzymes d. inorganic phosphate2. Dehydrogenase reactions in TCA cycle.In case of starvation ie complete absence of glucose __ can be used to alternatively fuel the brain a. Oxaloacetate b. Pyruvate c acetoacetate d. Acetyl CoA
- Coenzyme Q (CoQ) is sold as a nutritionalsupplement. One company uses this marketing slogan for CoQ: “Give your heart thefuel it craves most.” Considering the role ofcoenzyme Q, critique this claim. How do youthink this product might function to benefitthe heart? Is CoQ used as a “fuel” during cellular respiration?The oxidation of coenzyme ___________________ provides 1.5 ATP through electron transport.One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis. Under conditions of zinc deficiency and the enzyme lacks zinc, it would be referred to as the: a. apoenzyme. b. coenzyme. c. holoenzyme. d. prosthetic group. e. substrate.
