View Pit Stop page for race #554 by vituperative1 — Ghost race
View profile for n (vituperative1)
Official speed | 76.98 wpm (105.38 seconds elapsed during race) |
---|---|
Race Start | September 25, 2018 12:29:44pm UTC |
Race Finish | September 25, 2018 12:31:29pm UTC |
Outcome | No win (1 of 1) |
Accuracy | 97.0% |
Points | 128.30 |
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. |