47.Describe the difference between a pyrimidine and a purine base?
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- Describe the steric interactions that determine the conformations that pyrimidine nucleosides assume.30 What are the four nitrogenous bases found in RNA? a) adenine, thymine, cytosine, guanine b) alanine, tryptophan, cysteine, glycine c) adenine, guanine, cytosine, uracil d) ammonia, urea, uric acid, alanined. 21.8 Identify each of the following as a nucleoside or a nucleotide: a. deoxythymidine b. guanosine c. deoxyadenosine monophosphate d. uridine monophosphate 11
- Draw the titration curves for the following AA’s: Aspartic acid, Alanine, Lysine, Valine, Serine, and Trrosine.30. How does the alkyl chain in C17 influence the conformational stability of a cholestane/cholesterol?What are the structural differences between (a) purines and pyrimidines, and (b) ribose and deoxyribose sugars?
