Cos 6 - Class 6 Thursday, January 24, 2008 11:16 AM...

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Class 6 Thursday, January 24, 2008 11:16 AM Lingering questions Enantiomers Isonmers-molecules w/ the same chemical formulae but different arrangement Stereoisomers- isomer w/ the same chemical bonds but different atmoic arrangements in space Same chemical bonds Enantiomer- Stereoisonmers that are Mirror images of ecah other and cannot be superimposed D vs. L- based on the geometry of each enantiomer Endosymbiosis Bacterium englufs archeaon= archeon becomesnucleus of nascent eukaryote Eukaryote engulfs bacterium- mitochondrion " engulfs "= plastid " " eukaryote= more complicated plastid Not as widely accepted Plastid-Membrane bound organelle (chloroplast) Small handful of bacteria are pathogentic For horozontal gene transfew to be affect by pathogenity
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you need to go through human host that doesn't have antibiotic resistent Long story, but horizontal gene transfer isn't going to kill you Cambrian Explosion and Early Paleozoic Life Most Precambrian life was microscopic There are SOME fossils of macroscopic organisms
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Cos 6 - Class 6 Thursday, January 24, 2008 11:16 AM...

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