Biology 1002B Lecture Notes - Lecture 10: Hybridization Probe, Trichomonas, Southern Blot
1 May 2013
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Nucleus, trafficking, cytoskeleton, sex, phagocytosis, organelles, differentiation into different tissue types. Prokaryotes show no tendency to develop these. Seems like all of a sudden, eukaryotes got the ability that allowed for multicellular complexity. The earliest forms of life were anaerobic bacteria. Metabolic process used to get atp was fermentation. Fueled the ability to keep glycolysis going. Don"t get very much atp -> break down glucose, but you don"t harness all the free energy that is in a molecule of glucose -> starved for atp. About 2. 2 billion years ago, cyanobacteria developed. Prokaryotic cell structure can do oxygenic photosynthesis. Split water to oxygen; ability is what led to oxygen accumulating in the atmosphere. Cyanobacteria have ps2 and ps1 -> only group of prokaryotic cells that have a photosynthetic structure similar to the chloroplast. Led to the development of bacteria that can undergo aerobic respiration. Aerobic respiration could only evolve after there was enough oxygen in the atmosphere.
