BIOL 1000 Chapter Notes - Chapter 8: G1 Phase, Contact Inhibition, Cycl
1 Oct 2015
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Chapter 8: cell cycles: three cellular processes: dna replication, changing cytoskeleton, cell cycle checkpoints. 8. 1: the cycle of cell growth: all cells that have ever lived descend from previous cells unbroken chain. 8. 3a chromosomes are the genetic units divided by mitosis. 8. 3b interphase extends from the end of one mitosis to the beginning of the next mitosis. First and longest phase is interphase- cell grows and replicates dna in preparation for m phase and cytokinesis. Interphase begins as a daughter cell from previous division: g1 phase- initial growth period cell makes various rnas, proteins, but not nuclear dna (g stands for gap absence of dna synthesis) 8. 3c after interphase, mitosis proceeds in 5 stages. 8. 4 formations and action of mitotic spindle: nuclear envelope breaks down. 8. 3d cytokinesis completes cell division by dividing the cytoplasm between daughter cells: cytokinesis division of cytoplasm begins during telophase, even late anaphase, by the time its done daughter cells goes on to interphase g1.
