student notes lec 20 F08 - CHM 115 Lecture 20 11-02-07...

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Click to edit Master subtitle style 11 CHM 115 Lecture 20 11-02-07 Reading: Biochemistry Interchapter, pp 530-544; page 506, carbohydrates only
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22 Genetic Material: DNA and RNA Just as proteins can be considered polymers of amino acids, DNA and RNA are polymers of nucleotides. Nucleotide = phosphate + sugar + base phospha te su gar base phospha te su gar base phospha te su gar base
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33 DNA Nucleotide Components In DNA, the “sugar” is deoxyribose. There are four possible bases in DNA. (A, C, G, T)
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44 DNA Polynucleotide
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55 RNA RNA has uracil base instead of thymine. RNA “sugar” is ribose.
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66 Double Helix Complementary base pairs exist There is enough room for exactly an A-T pair of a C-G pair inside the double helix Like puzzle pieces: A=T pair can make two hydrogen bonds, C-G pair can make three
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Double Helix DNA exists as a “double helix” shape, with the two helices held together through hydrogen bonding. Due to the complementary pairing, DNA
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This note was uploaded on 01/20/2009 for the course CHM 115 taught by Professor Towns during the Fall '08 term at Purdue University-West Lafayette.

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student notes lec 20 F08 - CHM 115 Lecture 20 11-02-07...

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