Lecture 3

Lecture 3 - Lecture 3 Evidence that supports the...

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Lecture 3 Evidence that supports the endosymbiont hypothesis Distinctive biochemical features shared by eukaryotic organelles and living bacteria Mitochondria and chloroplast each contain their own genomes Modern intracellular symbiosis o Look up a simple paramecium for studying Chlorella (a green algae) Multi-cellular Organisms Bacteria and Archaea are the only things with circular chromosomes besides humans Advantages of multicellularity o You are larger and better adapted The first multi-cellular organisms- 1 BYA o First time life existed besides unicellular organims Plants-primitive marine algae o Became multicellular Animals o marine invertebrates The Cambrian explosion- 544 MYA o NOTHING blew up just the number of species expanded drastically Almost all modern forms of animals arose at this time Earth’s History Projected on a 24-hour Day Earth forms at 0 hr’s o Still molten rock Earth’s first rocks at 3 a.m. o
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This note was uploaded on 11/15/2010 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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Lecture 3 - Lecture 3 Evidence that supports the...

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