MOL CLASS 13 - DNA (Part 1) (class notes S11)

MOL CLASS 13 - DNA (Part 1) (class notes S11) - NATURAL...

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1 NATURAL SCIENCE II: MOLECULES OF LIFE Spring 2011 Class 13 – Monday, March 21 DNA – The Molecule of Heredity (Part 1) Reading: Chapter 14, pp. 1 – 15 Next class: NOVA DVD (no assigned reading) OUTLINE (1) (2) All living organisms contains DNA (3) Scientific paths to the double helix (4) X-ray diffraction and molecular structure (5) Nucleotides – the building blocks of DNA (6) Making a polynucleotide strand
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2 ANNOUNCEMENTS
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3 DISCOVERY OF “NUCLEIN” 1869 -- Friedrich Miescher isolated a chemical substance from the nuclei of white blood cells. “nuclein”
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4 ALL LIVING CELLS CONTAIN DNA DNA bursting out of an E. Coli cell. Relationship between the three main kingdoms of life
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5 EUKARYOTIC CELLS
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6 SCIENTIFIC PATHS TO THE DOUBLE HELIX Rosalind Franklin James Watson Francis Crick
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7 BIOLOGY – What is the “transforming principle”?
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8 BIOLOGY – DNA is the molecule of heredity
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9 CHEMISTRY– Building molecular models Linus Pauling
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10 PHYSICS – Taking molecular snapshots
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MOL CLASS 13 - DNA (Part 1) (class notes S11) - NATURAL...

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