Biology 1001A Lecture Notes - Lecture 4: Nucleolus, Metaphase, Cytoskeleton
17 Dec 2017
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Population of cells can be really large- every bacteria comes from another bacteria through cell division o o. Cell division more complex in eukaryotes with linear chromosomes and divide cells by mitosis. Purpose of actively cycling cells mitosis is: o o anywhere where cells are undergoing wear and tear (skin), tissues that are growing, bone marrow for making blood. Meristematic tissue is where cells activing cycling in plants (under bark, tips branches, tips roots) Most cells most of time are not actively cycling. Cells in liver are detoxifying your blood not dividing. A given cell might be destined to replicate, sit around to do its job or job to die. Majority of cells in go, doing their jobs not replicating dna or divide. Cell cycle is controlled by checkpoints: most important one is between g1 and s from preventing dna from replicating its.
