B-Carotene, precursor of vitamin A, is oxidatively cleaved by: A B-Carotene dioxygenase B Oxygenase c Hydroxylase C D Transferase
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Q: can be broken down by amylase.* A. glycogen B. amylopectin C. catalase D. amylase
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- After the citric acid cycle reactions run _________, one six-carbon glucose molecule has been completely broken down to CO2. a. once b. twice c. six times d. twelve timesThe cholesterol synthesized by cells uses which component of the glycolytic pathway as a starting point? a. glucose b. acetyl CoA c. pyruvate d. carbon dioxideAll of the following classes of enzymes catalyze the Fatty acid synthesis except a. synthetase b. Synthase c. Carboxylase d. Dehydrgen
- Which of the following is NOT a component of the pyruvate dehydrogenase complex? a. dihydrolipoyl dehydrogenase b. dihydrolipoyl transacetylase c. pyruvate dehydrogenase d. dihydrolipoyl catalaseThe rate limiting and committed step of the pentose phosphate pathway is catalyzed by which of the following enzymes? A. Glucose-6-phosphate dehydrogenase B. Hexokinase C. 6-Phosphogluconate dehydrogenase D. TransketolaseHow many ATP may be produced from 1 mole of the following compounds on complete oxidation using the glycerol-3-phosphate shuttle? COMPOUNDSa.) Mannoseb.) Dihydroxyacetone phosphatec.) Citrated.) Malatee.) Succinate
- GTP or ATP is produced during the conversion of ________. a. isocitrate into α-ketoglutarate b. succinyl CoA into succinate c. fumarate into malate d. malate into oxaloacetateWhich of the following citric acid cycle enzymes catalyzes substrate-level phosphorylation? A) isocitrate dehydrogenase B) α-ketoglutarate dehydrogenase C) succinyl CoA synthetase D) succinate dehydrogenase E) malate dehydrogenaseWhich glycolysis reactions are catalyzed by the following enzymes?(a) Pyruvate kinase(b) Glyceraldehyde 3-phosphate dehydrogenase(c) Hexokinase(d) Phosphoglycerate mutase(e) Aldolase
- ___________ is considered an important amphibolic pathway which plays a major role in oxidative catabolism and production of precursors in biosynthetic pathways. Group of answer choices Beta-oxidation Citric acid cycle Gluconeogenesis GlycolysisWhich of the following enzymes catalyze a reaction where a ketone is converted to an acid? Alpha-ketoglutarate dehydrogenase Glyceraldehyde 3-phosphate dehydrogenase Pyruvate decarboxylase Fumarase HexokinaseGluconeogensis uses nearly all of the same enzymes as those in ____, and is a(an) ______ reaction. Select one: a. Citric Acid Cycle anabolic b. citric acid cycle, catabolic c. glycolysis, anabolic d. glycolysis, catabolic e. none of the above
