View Pit Stop page for race #17406 by rilee_h443 — Ghost race
View profile for rilee_h443 (rilee_h443)
| Official speed | 75.10 wpm (108.02 seconds elapsed during race) |
|---|---|
| Race Start | June 21, 2020 6:05:33am UTC |
| Race Finish | June 21, 2020 6:07:21am UTC |
| Outcome | Win (1 of 3) |
| Accuracy | 95.0% |
| Points | 125.16 |
| 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. |