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Biology

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Ap Bio Darwanian Evolution

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or more than 20 years Ullica Segerstr|[aring]|le has been charting the course of sociobiology, beginning with E. O. Wilson's Sociobiology (1975) and Richard Dawkins' The Selfish Gene (1976) through to the present-day 'science wars' and evolutionary psychology. Although she is interested in broad sociological and philosophical trends, her exposition here consists mainly in discussions of individual people, their views and their interrelations.
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Campbell Reece 6th ed. Chapter 4 important notes.

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Isomers ? Same chemical formula, but different structures: means different functions. Butane Structural isomers: differs in arrangement of atoms: Vast differences in variation Geometric isomers: same covalent partnership (same atoms) but different shape. Arises from inflexibility property of doubled bonded atoms ? will not allow atoms to rotate along the bond axis. Enantiomers: Are mirror images of each other. Eg: C?H-O and O-H?C. One is biologically active and the other is not. The ineffective one might even produce an undersired or harmful effect. Hydroxyl Group: Hydrogen atom bonded with an oxygen and which is in turn bonded with a Carbon skeleton. Organics that have hydroxyl groups are called alcohols. Their names end with ?ol. Polar and hydrophilic.

The Cell Theory

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-Who created the cell theory? -Matthias Schleiden: In 1838, he discovered that plants are made of cells -Theodor Schwann: In 1839, he discovered that animals are also made of cells -Rudolph Virchow: In 1858, he stated that all cells come from the division of pre-existing cells -Based on their observations the cell theory states: 1. All living things are made of cells 2. Cells are the basic units of structure and function in an organism 3. All cells are made from existing cells

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