View Pit Stop page for race #1353 by thege — Ghost race
View profile for Delgerskhn (thege)
Official speed | 75.41 wpm (107.57 seconds elapsed during race) |
---|---|
Race Start | June 18, 2020 12:42:41am UTC |
Race Finish | June 18, 2020 12:44:29am UTC |
Outcome | Win (1 of 4) |
Accuracy | 98.0% |
Points | 125.69 |
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. |