View Pit Stop page for race #60 by bbryanchoi — Ghost race
View profile for Bryan (bbryanchoi)
Official speed | 83.27 wpm (97.42 seconds elapsed during race) |
---|---|
Race Start | May 3, 2020 3:33:16pm UTC |
Race Finish | May 3, 2020 3:34:54pm UTC |
Outcome | Win (1 of 4) |
Accuracy | 96.0% |
Points | 138.78 |
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. |