As usual, Dr. Parameswari came and gave us her fifth week lectures and it is all about endosymbiotic theory. I’m very excited to heard and watched Dr. Parameswari lectures time because the way her teach didn’t make us boring and it was totally awesome. So, this week I’va been tought the theory of endosymbiosis where it’s basically stated that mitochondria and chloroplast are originally from prokaryotes but in general, they are considered to have originated fron proteobacteria through endosymbiosis. American biologist, Lynn Margulis said that some organelles within cells were at one time free living cells. She also stated that organelles with their own DNA that is chloropast and mitochondria. Endosymbiosis theory have suggest that eukaryotes arose from a symbiotic relationship between various prokaryotes. Heterotropic(aerobic) bacteria became mitochondria and cynobacteria(photosynthetic) became chloroplast. Last but not least, host cell was a large eukaryotic cell. Research have found that there are similar characteristic that proves that mitochondria and chloroplast is from prokaryotes. This really did makes me shocked because from the first i tought that both mitochondria and chloroplast is from eukaryotic cells. Dr. also gave us a SCL activity of group on giving out the differences and similarities of mitochondria and chloroplast. Not only that, she also gave an exercises of group on determine what mitochondria and chloroplast are. Is it from prokaryotes or eukaryotes and we’ve identified that both two cells are originated from prokaryotic cells. The ideas on how these two organelles can join the eukaryotics cells is; eukaryotic cells undergo phagocytosis and basically engulfing food and by accident mitochondria and chloroplast were swept along into the eukaryotic cells. So as time pass by, mitochondria and chloroplast get into eukaryotic cells and permanently stay in eukaryotes.
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