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exam2s06 - CH 369 Spring 2006 Exam 2 Multiple Choice 1...

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CH 369 Spring 2006 Exam 2 Multiple Choice 1) Which among the following is a ligand of iron in the heme of myoglobin? a) Porphyrin b) Vinyl group c) His F8 d) Propionate group e) His E7 2) Which of the following statements about hemoglobin is FALSE? 3) What is the effect of an increase in pH on the O 2 binding affinity of hemoglobin? 4) Which among the following statements about BPG is FALSE? 5) Which amino acid can participate in acid-base catalysis? a) His b) Lys c) Cys d) Tyr e) All of the above
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6) Given that the Michaelis Menten Equation is calculate the reaction velocity of an enzyme catalysed reaction when [S] = K M. (Vmax = 10 nM/s) 7) Which of the following statements about competitive inhibitors is FALSE? 8) Which of the following proteins is associated with transporting cargo? 9) Tubulin subunits have a ___________ nucleotide-binding site. a) adenine b) cytosine c) guanine d) thymine e) uracil 10) Microfilaments are made up of polymers formed by
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11) During microfilament assembly, monomer subunits are added where in the growing polymer? 12) All enzymes function specifically by f) altering the free energy of the products g) lowering energy of activation h) chemically changing the transition state species i) increasing the transition state lifetime j) None of these
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