BMB401F04T1 - I, (Name) _ have neither received nor given...

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I, (Name) _________________________________________ have neither received nor given help BMB 401/506-Fall 2004 First Examination KEY September 21, 2004 During the exam you should not be in possession of a beeper or a cellular phone. Please place your beeper or your cellular phone in your book bag (after you turn it off!!) and place the bag against the wall of the room. You can only use calculators that do not have memory capabilities for alphabetic characters. Other calculators should also be placed in your bag. THESE ARE STANDARD SINGLE ANSWER MULTIPLE CHOICE QUESTIONS. THE POSSIBLE ANSWERS ARE LABELED A,B,C,D AND E. SELECT THE SINGLE BEST ANSWER AND MARK THE APPROPRIATE CIRCLE ON THE SCANTRON ANSWER SHEET. Bubble in your name and ID# (C# please). There are 44 questions. You will receive full credit for 42 correct answers. This is α-glucose. 1. One step oxidation of glucose at carbon 1 produces: A. fructose B. gluconic acid C. gluconolactone D. glucuronic acid E. sorbitol (glucitol) 2. Inversion of the hydroxyl of glucose at carbon 2 produces: A. fucose B. galactose C. maltose D. mannose E. β-glucose 3. Glucosamine is a glucose molecule with the following modification: A. An internal hemiacetal between carbons 1 and 5 B. An internal hemiacetal between carbons 2 and 6 C. An amino group at carbon 1 D. An amino group at carbon 2 E. An oxidation product of glucose 4. In the common N-linked glycoproteins sugars are attached to the side chain of the following amino acid residue: A. Asparagine B. Glutamate C. Glycine D. Histidine E. Lysine 5. The side chain of one of the following amino acid residues cannot participate in hydrogen bonding: A. Asparagine B. Glutamate C. Glycine D. Histidine E. Lysine 6. Asparagine relates to aspartate as: A. Cysteine to homocysteine B. Glutamine to glutamate C. Histidine to histamine D. Lysine to leucine E. Serine to threonine 7. Initial synthesis of N-linked polysaccharides: A. Requires a lipid molecule named dolichol B. Occurs at the membrane of the endoplasmic reticulum C. BOTH A and B are correct D. NEITHER A or B is correct 8. If the ΔG°΄ for the isomerization of dihydroxy-acetone phosphate to glyceraldehyde phosphate is +1.66 kcal/mole, then the equilibrium constant is: A. 0 B. 0.06 C. 1 D. 16.6 E. 100 9. The enzyme that converts lactose to galactose and glucose is a: A. Oxidoreductase B. Transferase C. Hydrolase D. Lyase E. Isomerase Page 1 of 4
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I, (Name) _________________________________________ have neither received nor given help 10. Enzymes lower the following characteristic of a reaction: A. Activation energy B. Change in free energy C. Kcat D. Km E. Turnover number
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This note was uploaded on 02/10/2012 for the course BMB 401 taught by Professor Staff during the Fall '09 term at University of Miami.

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BMB401F04T1 - I, (Name) _ have neither received nor given...

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