Biology 1002B Lecture Notes - Lecture 11: Horizontal Gene Transfer, Cytochrome C Oxidase, Nuclear Dna
31 Mar 2016
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Hypothesis of endosymbiosis: blue arrow represent evoluionary ime (less to more recent) Infolding of plasma membrane itself, part breaks of becomes the nuclear envelope becomes the er chloroplast/mitochondria don"t make energy, they transduce it. Can make lots of atp cyanobacterium: progenitor of modern day chloroplast some of these cells go on to engulf these, breaking of into the plant lineage morphology these energy-transducing organelles look the same as bacteria and archaea. Same size, shape, membrane formaion/division new chloroplasts/mitochondria come from old chloroplasts through binary ission. Can"t make chloroplast de novo bacteria divide by binary ission as well not built the way we would build a ribosome assembled with rna and protein. They have their own etcs just like free-living bacteria. Have their own dna, as a free-living cell would have to have to survive. All ribosomes, enzymes, etc. required, as if they were living on their own we have cell, has taken in aerobic bacterium, it becomes mitochondria.
