Biology 1001A Chapter Notes - Chapter 8: Kinetochore, Metaphase, Sister Chromatids

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10 Apr 2014
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Cell must be coordinated and grow and replicate at correct rate to function. 3 main cellular processes: dna replication, dynamically changing cytoskeleton, cell cycle checkpoints . Process called binary ssion (splitting into 2 pces) 3 periods: after birth cells may grow then. C period=chromosomes are nished replicated and separate to opposite cell ends. D period= membrane pinches between chromosomes and 2 daughter cells formed. 8. 2b binary fission in detail (see gure 8. 3) pg 163 origin of replication (ori) =middle of cell where enzymes for dna replication located after ori dup. , 2 new origins move to opposite cell poles. Then, => cytoplasmic diversion w/ new plasma membrane & cell wall is lined and ready to divide cell into 2 equal parts inward constiction of cytokinetic ring of cytoskeletal prtns. 8. 2c evolution from binary ssion to mitosis: differences of pro & eukaryotic cells, -from 1 chromosome to multiple (cannot have any replication issues, -eukaryotic have dna in nucleus and nuc membrane,

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