Tim (tim28)

Race #584

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Official speed 75.27 wpm (107.77 seconds elapsed during race)
Race Start July 3, 2018 2:55:54pm UTC
Race Finish July 3, 2018 2:57:41pm UTC
Outcome No win (2 of 4)
Opponents 1. optimus_line (75.64 wpm)
Accuracy 97.0%
Points 125.46
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.