Jack (tzak)

Race #653

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Official speed 93.38 wpm (86.87 seconds elapsed during race)
Race Start May 21, 2019 3:56:52pm UTC
Race Finish May 21, 2019 3:58:19pm UTC
Outcome Win (1 of 5)
Opponents 2. tshafer3 (92.60 wpm)
Accuracy 97.0%
Points 155.64
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.