A_08 - Score Bio 98A Final Exam 3/19/08 Name SID Either...

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Bio 98A Final Exam 3/19/08 Name SID Either full names or abbreviations of enzymes/intermediates are fine. A1). Name the three glycolysis enzymes that are both regulated and irreversible. (3 pt) _____________________________ _____________________________ ____________________________ A2). The two glycolysis enzymes that catalyze substrate-level phosphorylation are ____________________________ and ____________________________ (2 pt). A3). Glycogen is turned into glucose-6-phosphate (G6P) by the two enzymes ________________________________ and ________________________________ (2 pt) A4). Answer “inhibit”, “activate” or “no change” for the following scenarios (3 pt total): a) Lots of acetyl-CoA on the rate of pyruvate carboxylase (PC) b) Lots of citrate on the rate of phosphofructose kinase (PFK1) c) Lots of calcium on the rate of pyruvate kinase (PK) (a)_____________________________ (b)_____________________________ (c) __________________________ A5). How many net molecules of ATP will one molecule of 3-phosphoglycerate (3PG) generate upon complete oxidation to CO2 and H2O in the muscle? __________________________ (write the answer in the underline, 2 pt) A6). During glycolysis, which enzyme can be poisoned by arsenate?__________________________ (1 pt). Draw the chemical structure of the product from this enzyme (2 pt). Draw chemical structure here. Score (Do not write in here) Total
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Bio 98A Final Exam 3/19/08 Name SID B1). Consider a liver cell stimulated with insulin. a) How does it affect the rate of amino acid biosynthesis in these cells? b) How does it affect the level of fatty acid biosynthesis in these cells? c) What is its effect on the gluconeogenesis? (Answer a, b, c simply by saying “decrease”, “no change” or “increase” , 3 pt total) (a)_____________________________ (b)_____________________________ (c)_____________________________ B2). About the prosthetic groups of pyruvate dehydrogenase. Vitamin B2 is converted into _______________________, which is the prosthetic group of ___________________ (answer E1, E2 or E3). (2 pt) B3). The shape of pyruvate dehydrogenase is ___________________ (one word) (1 pt).
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This note was uploaded on 03/15/2010 for the course BIO SCI 97 07777 taught by Professor Yi during the Spring '10 term at UC Irvine.

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A_08 - Score Bio 98A Final Exam 3/19/08 Name SID Either...

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