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Transcript
1 Structure & Function of DNA DNA is a Double Helix, made up of nucleotides Each nucleotide is composed of: 1 1. 1 Phosphate group 1 2. 1 Deoxyribose sugar 3. and one of 4 nitrogen bases 4 2 The 4 Nitrogen Bases are: Adenine Thymine Guanine Cytocine A T and G C = complementary base pairing (DNA structure) http://www.youtube.com/watch?v=qy8dk5iS1f0 3 The 2 Functions of DNA: 1. To store & pass on information (DNA replication) http://www.youtube.com/watch?v=hfZ8o9D1tus 2. To direct cell metabolism (Protein synth) http://www.youtube.com/watch?v=6dMlde9akBk 4 Cell Metabolism: Thousands of molecules in each cell continually reacting with each other to maintain cell function DNA directs cell metabolism by instructing the cell to make proteins Do this now; hand it in Read: Whale book pg 1801 Answer these Q’s with complete thoughts & sentences: • What determines the shape of the protein formed by amino acids? • List 4 functions of proteins. • What do enzymes do? • Answer Q # 3 on page 184. 5
