BS 10-10 - BS 110 Prokaryotic Cells Eukaryotic Cells...

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BS 110 October 10, 2007 Prokaryotic Cells Eukaryotic Cells Endosymbiotic Theory - provides an explanation on how eukaryotic cells evolve from prokaryotic cells - prokaryotes took up residence inside other cells - nonphotosynthetic prokaryotes became “incorporated” into cells through time and evolved into mitochondrion; in mitochondrion, several chemical reactions take place including the formation of ATP - photosynthetic prokaryotes became “incorporated” into cells, and they developed/evolved into plastids (organelle that is found in many diff types of organism; ex chloroplast- where photosynthesis occurs in plants; ex chromoplast- organelle that give a tomato the red color) - nucleus originated via inpouching of plasma membrane that surrounded and protected DNA Book talks about Primary and Secondary Endosymbiosis --- DON’T NEED TO KNOW! Eukarya (3 rd Domain) - humans are in this domain - all organisms in this domain are eukaryotic - chromosomes are linear - DNA is associated with histones (globular proteins)
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