IntroBio-11- Nucleic acids and proteins

IntroBio-11- Nucleic acids and proteins - Nucleic Acids and...

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Nucleic Acids and Proteins 1
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2 types of nucleic acids DNA - deoxyribonucleic acid RNA - ribonucleic acid 2
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Components of nucleic acids Sugar Deoxyribose in DNA Ribose in RNA Phosphate group Base 3
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Bases Adenine (A) Cytosine (C) Guanine (G) Thymine (T) Uracil (U) DNA: ACGT RNA: ACGU 4
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Nucleotide Building block of a nucleic acid Sugar & phosphate group exterior backbone Base interior 6
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7
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DNA - directional molecule 2 antiparallel strands: 5’ – 3’ direction 3’ – 5’ direction Strands are held together by hydrogen bonds between bases 8
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DNA A 2-Way Street Figure 10-5 9
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Watson-Crick Model DNA consists of 2 nucleotide strands Strands run in opposite directions forming a double helix 10
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Bases of the 2 strands point inward toward each other forming base pairs (bp) Diameter of the molecule is kept constant at 2nm 11
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Double helix 12
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13
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1952 -
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This note was uploaded on 11/01/2010 for the course BIO 110 taught by Professor Drazkiewicz during the Fall '09 term at San Mateo Colleges.

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IntroBio-11- Nucleic acids and proteins - Nucleic Acids and...

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