View Pit Stop page for race #9 by graham152 — Ghost race
View profile for Graham (graham152)
| Official speed | 72.82 wpm (111.40 seconds elapsed during race) |
|---|---|
| Race Start | September 24, 2019 7:24:54pm UTC |
| Race Finish | September 24, 2019 7:26:46pm UTC |
| Outcome | Win (1 of 3) |
| Accuracy | 97.0% |
| Points | 121.37 |
| 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. |