12 - http/www4.ncsu.edu/~knopp/BCH451/e03a3.htm BCH 451...

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BCH 451 Spring 2003 Exam #3 NAME 1. Draw the predominate structures of the following molecules at the pH indicated. Be sure to include all carbon and hydrogen atoms! a. (1.5) cAMP at pH = 8 b. (3) A = pTpdA; B = dCpGp in the syn conformation at pH = 7 c. (3) C = 1-palmitoyl-2-linolenoyl phosphatidyl inositol; D = 1- palmitoleoyl-2-linoleoyl phosphatidyl inositol at pH = 8 2. Circle the RNA type which is specified on the first page M R SN T a. (0.3) Give the full name: b. (0.5) Give the size(s) or size range of this type in bases: c. (2) Give a complete description of its function within the cell: 3. For the adenylate cyclase pathway, describe the 4. For the vitamin L = niacin; N = thiamin a. (0.5) What causes the deficiency of this vitamin? b. (0.5) What diseases are a consequence of this deficiency? c. (0.3) Who is responsible for its discovery?
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