BCH 451 Spring 2008 Exam #3 1. Draw the predominate structures of the following molecules at the pH indicated. Be sure to include all carbonand hydrogen atoms!a. (1) C= cAMP; or I= IP3at pH = 7: [Draw it on the back of page #1.]b. (4) C= 1-arachidonoyl-2-linoleoyl-phosphatidyl inositol; D= 1-arachidoyl-2-linolenoyl-phosphatidylcholinec. (4) F= pdUpddG; G= TpdAp [pyrimidines in synand purines in anti]2. Circle the RNA type which is specified on the first page: M R SN Ta. (0.3) give the full and complete name:b. (0.7) give the size(s) or size range of this type in units of bases:c. (2) give the full description of the function of this type within the cell:3. (3) Describe how E= hydrophobic effect; B = hydrogen bonds; I= electrostatic interactions; or S= stackinginteractions stabilize the DNA double helix:4. (2) PUZZLER In the Sanger’s dideoxy sequencing procedure, why is 2',3'-dideoxynucleoside triphosphate usedinstead of 2',5'-dideoxynucleoside triphosphate?
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