Study Questions 3 - Study Questions 3 Chapters 4 and 5 1....

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Study Questions 3 Chapters 4 and 5 1. Know the structures of the 5 main bases found in DNA and RNA as well as the sugar phosphate backbone. 2. What are the major differences between DNA and RNA and how do these differences affect their comparative stability? 3. Draw the structure of adenosine 5’-triphosphate. Label the sugar, base, β-glycosidic bond and the α,β and γ phosphates. 4. What holds the two strands of the DNA double-helix together? 5. Write the complementary sequence (in the standard 5’ 3’ notation) for GATCGCGAAT. 6. What are the 3 main types of RNA and what are their functions, relative amounts, and how do they compare in size? 7. Which Watson-Crick DNA base-pair is tighter, A-T or G-C? Why? 8. After an eukaryotic mRNA has been synthesized, it usually undergoes modifications such as: a) addition of a polyA tail to the 3’ end b) excision of parts of the mRNA c) chemical alteration of Ts to Us d) addition of a 5’ methylguanine cap e) all of the above
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Study Questions 3 - Study Questions 3 Chapters 4 and 5 1....

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