heartbeats (jack777)

Race #33998

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Official speed 101.29 wpm (80.09 seconds elapsed during race)
Race Start December 29, 2018 11:22:31am UTC
Race Finish December 29, 2018 11:23:51am UTC
Outcome Win (1 of 4)
Opponents 2. marin049 (96.61 wpm)
3. poem (92.55 wpm)
4. sputype (82.16 wpm)
Accuracy 98.0%
Points 168.82
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.