Biology 1002B Lecture : Biology 1002 Lectures 10 - 17 Outcomes
3 Jan 2014
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1: meaning of endosymbiosis, cyanobacteria, lateral gene transfer. Endosymbiosis: the theory that mitochondria we see in our cells today are actually from aerobic bacterium. Cyanobacteria: the only group of bacteria or archaea that undergo oxygenic photosynthesis, mitochondria came first, followed by the development of the chloroplast. Lateral gene transfer: the transfer of genes between organisms in a manner other than traditional reproduction. Relocation of genes in the organelle to the nucleus: origin of endomembrane system, nuclear membrane, er etc. Endomembrane system: derived from the infolding of the plasma membrane. Nuclear membrane and the er are derived from the infolding of the plasma membrane: nuclear envelope is an advantage tightly control transcription and translation from the, origin of mitochondria and chloroplasts rest of the cell. Mitochondria said to have derived from an aerobic bacterium: ancestral bacterium was probably anaerobic, so there would be an advantage to bring in the aerobic bacterium through phagocytosis to provide you with lots of atp.
