Which cell organelles are believed to have once been self-sustaining and independent?
Added by Peggy G.
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Step 1: Identify the cell organelles that are commonly associated with the endosymbiotic theory, which suggests that certain organelles were once independent prokaryotic organisms. Show more…
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other cellular organelles that may have arisen by an endosymbiotic mechanism? (other than mitochondria and chloroplast.)
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The theory of endosymbiosis suggests that chloroplasts and mitochondria were once free-living prokaryotes, that were engulfed by larger prokaryotic cells. Eventually, this relationship lead to the development of eukaryotic cells with cellular organelles. These organelles included mitochondria, and in some cases, chloroplasts.
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Why do scientists believe that mitochondria and chloroplasts were originally independent organisms that eventually became part of eukaryotic cells via endosymbiosis? (Note: this question is asking why scientists believe the endosymbiont theory is true, not what the theory itself says.
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