6K - Net ID KEY A Quiz 6a 10/28/09 1. (5 pts) Circle each...

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Net ID KEY A Quiz 6a 10/28/09 1. (5 pts) Circle each of the following that does not readily pass through a biomembrane: proline unprotonated fatty acid myoglobin O 2 ATP Na + sucrose CH 3 CH 2 OH H 2 O Cl - 2. (4 pts) The hydrolysis rxn of phosphocreatine is shown. List four reasons why this rxn is so favorable. a. PHOSPHATE RESONANCE b. GUANIDINO RESONANCE c. BETTER PRODUCT SOLVATION d. FAVORABLE UPTAKE OF H+ BY WATER 3. (4 pts) Match the molecule on the left with the description on the right. Write the letter in the blank. Use each letter A-D only once. a. _ B __ di(C18:0)-phosphatidylcholine A. lipid with a tiny polar headgroup b. _ C __ di(C18:2)-phosphatidylcholine B. lipid likely to form a solid-phase bilayer c. _ A __ cholesterol C. lipid likely to form a fluid-phase bilayer d. _ D __ triacyl(C18:1)glycerol D. lipid that forms a fluid fat droplet 4. (8 pts) Calculate G for the overall rxn shown below. Circle your answer! Show calculations! R = 0.0083kJ/mol . K and T = 300K. for ATP ADP + Pi , G o' = -30kJ/mol and for glucose + Pi glucose-P , G o' = +14kJ/mol ATP + glucose ADP + glucose-P where [ATP] = 9mM, [ADP] = 3mM, [glucose] = 4mM, and [glucose-P] = 5mM G = -16kJ/mol + (0.0083kJ/mol . K)(300K)ln(3 x 5)/(9 x 4) = -16kJ/mol + (2.49kJ/mol)ln(0.42)
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This note was uploaded on 09/19/2010 for the course BIOBM 3310 taught by Professor Feigenson,gw during the Fall '07 term at Cornell.

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6K - Net ID KEY A Quiz 6a 10/28/09 1. (5 pts) Circle each...

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