Exam I Spring 10

Exam I Spring 10 - N ame: I CHEM3 40.01:B iochemistry Exam...

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Name: CHEM 340.01: Biochemistry I Exam 1 February 17,2010 Part l: Eeny, meeny, miney moe. ... For questions l-20, choose the single best answer. Please mark your answer on the Scantron card AND on the exam. Thank you . (2 pts . each) 1) One of the properties or features of water that make is such a unique substance is its: g\ molecular weight. (o),) chemical composition. cJ availabilitv. d) electronic geometry. 2) .Bjglogical molecules such as proteins and DNA have the 3D structures that they do due to: Q/ how they interact with water. b) their chemical compositions. c) their limited lifetimes. d) their being made mostly of carbon. 3) The formation of a single hydrogen involves - atoms. a) 1 b)2 /v\ tc)J 3 bj4 4) The ionization qortstant afi&aletjs;. ,"{. T;Tdir*- 6") 1 x 1o-16 c) 1 x 10-7 d) 1 x 107 5) Water has a very high dielectric constant. What the significance of this property with respect to keeping a cell alive? a) The high dielectric constant helps prevent the collection of ionic species in the cell from aggregating. b) The high dielectric keep the non-polar species in the cell together. c) The high dielectric allows for high concentrations without precipitation. i'dl all of the above. 5) .I[e strongest bonds (H-bonds) are formed when the: (a)] atoms involed in a straight Iine. bl hydrogen is attached to an oxygen. c) hydrogen to a nitrogen. d) atoms involved are not all line. t,' fri'{ iu i'.[ ,',lrlii l rli; l
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@wp. 1 3) The peptide alanvlelutamylslycyl + a) a disulfid€ bridge. @ four peptide bonds. c) two free amino groups. d) no free carboxyl group. 14) A peptide is formed b! amino acids being joined through a series of - reactions. a) hydrolysis. b) group transfer. Q oxidation-reduction. (p!) condensation. 1 5) Which is the highesf level of structure that is observed in a/l functional proteins? a) 10 b) 20 Gff :" Y+" '16) ln a conjugated protein, a prosthetic group is: a) a region that doesn't fit into one of the standard secondary structural classifications. " pa-rt
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This note was uploaded on 12/04/2011 for the course CHEM 340 taught by Professor T.baird during the Fall '11 term at S.F. State.

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Exam I Spring 10 - N ame: I CHEM3 40.01:B iochemistry Exam...

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