27 - http:/www4.ncsu.edu/~knopp/BCH451/e09b3.htm BCH 451...

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BCH 451 Summer 2009 Exam #3 NAME student number : 0 0 0 - 1. Draw the predominate structures of the following molecules at the pH indicated. Be sure to include all carbon and hydrogen atoms! a. (1) IP 3 @ pH = 7 b. (2.5) α-D-ribulofuranosyl -(2→6)-β-D-galactopyranose-3-phosphate @ pH = 7 c. (2.5) 1-myristoyl-2-oleoyl-phosphatidyl serine @ pH = 7 d. (3) pdGppTp with purines in anti and pyrimidines in syn @ pH = 7 2. (3) Using one example from the receptor tyrosine kinase pathway explain the concept of “a hole in the bucket”: [Include details and explain why this “hole” is necessary] 3. (2) Explain what it means that one possible function of lipids is “protective barrier”: 4. For t-RNA, a. (0.2) What is the full and complete name: b. (0.3) What is the size: c. (1) What is the cellular function: d. (1) Why is this molecule not the dictionary molecule? 5. (2) PUZZLER In your textbook, it is stated: “The most oxidized carbon of a cyclized monosaccharide . ... is referred to as the anomeric carbon.” Is this statement correct or not? Explain your answer.
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This note was uploaded on 12/01/2010 for the course BCH 451 taught by Professor Knopp during the Spring '08 term at N.C. State.

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27 - http:/www4.ncsu.edu/~knopp/BCH451/e09b3.htm BCH 451...

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