20Jan_6 - Good Morning • If you have had the opportunity...

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Unformatted text preview: Good Morning • If you have had the opportunity to purchase and register your i>clicker, please turn it on and press A, B C, or D whichever you want. • Writing Assignment has been posted to Blackboard. Due date: Tuesday 25 January. • Exam 1 , Tuesday 01 February– Study now • Nucleic Acids and A Tour of the Cell I Lecture 6 – BSC 2010 20 January 2011 Fig. 5-26-3 mRNA Synthesis of mRNA in the nucleus DNA NUCLEUS mRNA CYTOPLASM Movement of mRNA into cytoplasm via nuclear pore Ribosome Amino acids Polypeptide Synthesis of protein 1 2 3 Fig. 5-27 5 end Nucleoside Nitrogenous base Phosphate group Sugar (pentose) (b) Nucleotide (a) Polynucleotide, or nucleic acid 3 end 3C 3C 5C 5C Nitrogenous bases Pyrimidines Cytosine (C) Thymine (T, in DNA) Uracil (U, in RNA) Purines Adenine (A) Guanine (G) Sugars Deoxyribose (in DNA) Ribose (in RNA) (c) Nucleoside components: sugars Fig. 5-UN10 Fig. 5-28 Sugar-phosphate backbones 3' end 3' end 3' end 3' end 5' end 5' end 5' end 5' end Base pair (joined by hydrogen bonding) Old strands New strands Nucleotide about to be added to a new strand Question 1 • Which are the proper DNA base pairings in the double helix A. C with T, and A with G B. A with A, and C with C C. A with T, and C with G D. A with C, and T with G E. All possible base pairings are found in the double helix Fig. 5.1, p. 90 WHO WOULD LIKE TO KNOW A QUESTION THAT WILL BE ON THE EXAM?? WHO WOULD LIKE TO KNOW A QUESTION THAT WILL BE ON THE EXAM??WHO WOULD LIKE TO KNOW A QUESTION THAT WILL BE ON THE EXAM?...
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20Jan_6 - Good Morning • If you have had the opportunity...

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