BIS102 MT2 Sample S10 Key Cheng

BIS102 MT2 Sample S10 Key Cheng - Name: Last First Student...

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Name: Last First Student ID: BIS 102 MT1 Sample Exam Amino acid side chains pK a ’s C 8.3 D 3.9 E 4.2 H 6.0 K 10.5 R 12.5 Y 10.1 Amino acid α -carboxyl group 2.1 Amino acid -amino group 9.6 Oligopeptide N-terminal amino group 7.4 Oligopeptide C-terminal carboxyl group 3.6 (15pt) 1. How many moles of OH are required to raise the pH of 4.00 liters of 25 mM glycine, pH 1.90, to a final pH of 9.70? Assume that the addition of OH does not change the volume of the solution. Show your work to receive full credit 0.12 moles of OH (10pt) 2. We have extensively studied the properties of the twenty amino acid R-groups. In each condition, there may have more than one correct answer. If there is more than one answer, then give all of them. However, do not guess. Points will be subtracted for wrong answers. R group properties one-letter symbol of the amino acid(s) group negative charged at pH 7 group absorbs ultraviolet light group can form salt bridges in a protein at pH 7 group cannot be present in an alpha-helix DE / FWY / DEHCKR/ PGS 1
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This note was uploaded on 10/22/2010 for the course BIS 102 taught by Professor Hilt during the Spring '08 term at UC Davis.

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BIS102 MT2 Sample S10 Key Cheng - Name: Last First Student...

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