View Pit Stop page for race #1222 by aqin24 — Ghost race
View profile for Alex (aqin24)
| Official speed | 83.92 wpm (96.66 seconds elapsed during race) |
|---|---|
| Race Start | May 14, 2018 7:23:20pm UTC |
| Race Finish | May 14, 2018 7:24:56pm UTC |
| Outcome | Win (1 of 5) |
| Accuracy | 96.0% |
| Points | 139.87 |
| 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. |