exam3 - http:/www4.ncsu.edu/~knopp/BCH451/e09b3.htm...

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12/25/09 5:47 PM http://www4.ncsu.edu/~knopp/BCH451/e09b3.htm Page 1 of 2 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.
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This note was uploaded on 12/25/2009 for the course BCH 451 taught by Professor Knopp during the Spring '08 term at N.C. State.

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exam3 - http:/www4.ncsu.edu/~knopp/BCH451/e09b3.htm...

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