Endosymbiotic theory – Flashcards
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What is the endosymbiotic theory?
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Certain prokaryotes lived within eukaryotes and evolved into mitochondria and chloroplasts
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What kind of relationship is described in the endosymbiotic theory?
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Symbiotic (prokaryotes get shelter and eukaryotes get food/ATP)
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What evidence is used to back up the endosymbiotic theory?
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Mitochondria and chloroplasts contain small DNA molecules
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What hypothesis explains the origin of eukaryotic cells?(17-2 427)
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The endosymbiotic theory
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Definition of the "Embosymbiotic theory (17-2 427)
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theory that eukaryotic cells formed from a symbiosis among several different prokaryotic cells
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Evidence to support the endosymbiotic theory (17-2 428-429)
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1) mitochondrial DNA and chloroplasts contain DNA similiar to bacterial DNA 2) mitochondria and chloroplasts have ribosomes whose size and structure closely resemble those of bacteria3) like bacteria, mitochondria and chloroplasts reproduce by binary fission while the cells containing them divide by mitosis
