Race Updates Discord About Merch
Home Profile History Competitions Texts Messages Friends Upgrade

typeracer

Pit Stop

Record your races with a typeracer account:

Create Your Account
  • Save your race history and scores.
  • Customize your profile and racecar.
  • It’s free, why not?
Racer Faktor X (northern_lights)
Race Number 16759
Date Thu, 7 Dec 2017 11:53:46 +0000
Speed 91 WPM Try to beat?
Accuracy 99.2%
Rank 2nd place (out of 2)

Text typed:

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.
Campbell Biology AP Edition (book) by Campbell (see stats)

Typing Review: