MOL CLASS 15 - DNA (Part 3) (class notes S11)

MOL CLASS 15 - DNA (Part 3) (class notes S11) - Class 15...

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Class 15 – DNA (Part 3) Molecules of Life – Spring 2011 1 NATURAL SCIENCE II: MOLECULES OF LIFE Spring 2011 Class 15 – Monday, March 28 DNA – The Molecule of Heredity (Part 3) Reading: Chapter 14, pp. 16 – 25 (skip section 14.5) Next class: Chapter 15, pp. 1 – 9 (“bare bones”) OUTLINE (1) Announcements & review (2 The DNA bases 1 (2) (3) Making a polynucleotide strand (4) Watson & Crick publication from 1953 (5) Structure of the DNA double helix (6) DNA replication ANNOUNCEMENTS 2
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Class 15 – DNA (Part 3) Molecules of Life – Spring 2011 2 NUCLEOTIDES – BUILDING BLOCKS OF DNA deoxyribose 3 MAKING A NUCLEOTIDE (1): Adding the Phosphate 4
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Class 15 – DNA (Part 3) Molecules of Life – Spring 2011 3 DNA CONTAINS 4 (NITROGENOUS) BASES N H 2 O pyrimidine DNA bases C C N C N C H H H H pyrimidine p u r i n e D N A b a s e s N C N C C C N C N H H H H purine N C N C C C O H H H cytosine N C N C C C O H H 3 C H thymine H * * N C N C C C N C N H H H 2 N O guanine N C N C C C N C N H H H N H 2 adenine ** 5 MAKING A NUCLEOTIDE (2): Adding the Base 6
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MOL CLASS 15 - DNA (Part 3) (class notes S11) - Class 15...

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