BCH 100, Winter 2009 WH #5 6 points LECTURES # 12-14 due Wed. Feb. 11, 2009, 2 pm Read carefully and give just one answer per question. 1. (1 pt) Which of the following enzymes uses the coenzyme biotin? a) pyruvate dehydrogenase c) pyruvate kinase e) PEP carboxykinase b) pyruvate decarboxylase d) pyruvate carboxylase f) isocitrate dehydrogenase 2. (1 pt) Which of the following enzymes produces NADP H? a) glucose-6-P dehydrogenase d) glyceraldehyde-3-P dehydrogenase b) pyruvate dehydrogenase e) α-ketoglutarate dehydrogenase c) phosphoglycerate kinase f) isocitrate dehydrogenase 3. (1 pt) The hormone insulin binding to its receptor on cell surfaces a) causes activation of protein kinases in the cell, resulting in phosphorylation (covalent modification) of glycogen phosphorylase and glycogen synthase, inactivating glycogen phosphorylase, and activating glycogen synthase. b) causes activation of protein phosphatases in the cell, resulting in DEphosphorylation (removal of covalent modification) of glycogen phosphorylase and glycogen synthase,
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