Review2 - BC367 Fall 2009 Exam 2 Review Questions In...

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+ BC367, Fall 2009 Exam 2 Review Questions
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+ In Anfinsen’s experiment, RNAse was denatured with urea and β-mercaptoethanol. After dialysis and treatment with oxygen, the enzyme’s activity was restored. What conclusions can be made from this? a) Urea and β-mercaptoethanol are ineffective denaturants. b) All the necessary information for protein folding is in the primary structure of RNAse. c) RNAse is particularly resistant to denaturation. d) The odds of the enzyme spontaneously folding correctly, with appropriate disulfide linkages, are close to 1. e) There must have been molecular chaperones present to facilitate proper folding.
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+ Emperor penguins can remain submerged for up to 18 minutes, diving to a depth of 535 m. What does the oxygen-hemoglobin dissociation curve look like for an emperor penguin compared to the domestic duck? a. The same. The birds have no difference in O 2 binding affinity. b. The dissociation curve is shifted left because the emperor penguin has a higher O 2 binding affinity.
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