View Pit Stop page for race #12 by andyyu2004 — Ghost race
View profile for Andy (andyyu2004)
Official speed | 83.25 wpm (97.44 seconds elapsed during race) |
---|---|
Race Start | April 17, 2020 4:38:31am UTC |
Race Finish | April 17, 2020 4:40:09am UTC |
Outcome | Win (1 of 2) |
Accuracy | 98.0% |
Points | 138.76 |
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. |