Exam 1 - Name _ BIO 362 Question 1. (10 Points) A. Please...

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Name __________________________ BIO 362 EXAM I February 20, 2009 Question 1. (10 Points) A. Please provide a brief description of how Viagra works? (4 Points) B. Please write the chemical structure of the key amino acid and name two enzymes involved in the pathway that Viagra affects. (6 Points) 1
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Question 2. (10 Points) A. Why should people who consume a high protein diet drink more water? (3 points) B. Draw the chemical structure of the amino acid Met and give three reasons for why it is so important. (7 points) 2
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3. PRPP is used in both pyrimidine and purine nucleotide biosynthesis. What is the difference in the use of PRPP in the synthesis of pyrimidine nucleotides as opposed to purine nucleotides? (One or two sentences are all that is needed to answer this question.) Draw the structure of PRPP as it would be in solution at neutral pH. Draw every atom including hydrogens. (12 pts.) 4. Draw the structure of adenosine. (13 pts.) 3
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5. As you know a phosphate in the interior of a nucleic acid chain forms a phosphodiester
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Exam 1 - Name _ BIO 362 Question 1. (10 Points) A. Please...

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