(delirious)

Race #21941

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Official speed 142.71 wpm (56.84 seconds elapsed during race)
Race Start January 29, 2019 4:19:04am UTC
Race Finish January 29, 2019 4:20:01am UTC
Outcome Win (1 of 2)
Accuracy 99.0%
Points 237.86
Text #3550368 (Length: 676 characters)

Mitochondria and chloroplasts display similarities with bacteria that led to the endosymbiont theory. This theory states that an early ancestor of eukaryotic cells engulfed an oxygen-using non-photosynthetic prokaryotic cell. Eventually, the engulfed cell formed a relationship with the host cell in which it was enclosed, becoming an endosymbiont, a cell living within another cell. Indeed, over the course of evolution, the host cell and its endosymbiont merged into a single organism, a eukaryotic cell with a mitochondrion. At least one of these cells may have then taken up a photosynthetic prokaryote, becoming the ancestor of eukaryotic cells that contain chloroplasts.