chm115_lecture27 - Chemistry 115 Lecture 27 Outline DNA and...

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Chemistry 115 Lecture 27 Outline DNA and RNA Reading: 28, 348, 392-3, 565 Recitation: Fats and Carbohydrates Amino acids, proteins DNA and RNA HW H13 on proteins/DNA due 4/27
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DNA What is the source of proteins? Amino acids, most from food Synthesized in the cell How do they get made? Blueprint provided by DNA, synthesized on RNA
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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 phosphate sugar base phosphate sugar base phosphate sugar base
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DNA Nucleotide Components In DNA, the “sugar” is deoxyribose. There are four possible bases in DNA. ( A, C, G, T )
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DNA Polynucleotide
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Double Helix Complementary base pairs exist There is enough room for exactly an A-T pair or 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 hydrogen bonds
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Complementary Base Pairs (DNA)
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Double Helix DNA exists as a “double helix” shape, with the two
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This note was uploaded on 02/03/2012 for the course CHEM 115 taught by Professor L during the Fall '02 term at Purdue University-West Lafayette.

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chm115_lecture27 - Chemistry 115 Lecture 27 Outline DNA and...

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