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.
—from Campbell Biology AP Edition, a book by Campbell
Active since October 7, 2017.
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| Rank | Username | WPM | Accuracy | Date |
|---|---|---|---|---|
| 1049. | DEX (dbrown1e) | 80.23 | 96% | 2020-06-03 |
| 1050. | Minty (spear_minty) | 80.21 | 96% | 2020-10-12 |
| 1051. | theoste18 (theoste18) | 80.21 | 95% | 2019-08-16 |
| 1052. | PR (mrprx) | 80.20 | 97% | 2019-08-11 |
| 1053. | Light (lightneesan) | 80.17 | 97% | 2020-03-31 |
| 1054. | Angela (angela13_) | 80.13 | 97% | 2020-11-22 |
| 1055. | (roiii) | 80.12 | 96% | 2019-05-28 |
| 1056. | Lucyfer (lucyfer42) | 80.06 | 97% | 2020-01-27 |
| 1057. | SoulMizou (paraloop) | 80.02 | 97% | 2019-05-28 |
| 1058. | Craz (gocrazy254) | 79.95 | 97% | 2019-02-08 |
| 1059. | aka49 (aka49) | 79.93 | 97% | 2018-06-17 |
| 1060. | twitch.tv/heynickolas (nick... | 79.91 | 94% | 2020-04-12 |
| 1061. | Type (born2bwilde) | 79.91 | 98% | 2019-03-26 |
| 1062. | Ivar (eaves) | 79.89 | 99% | 2020-07-17 |
| 1063. | throw (bomnom) | 79.82 | 96% | 2020-02-22 |
| 1064. | David (bigd4316) | 79.79 | 98% | 2018-02-10 |
| 1065. | Ray (turtleyturturt) | 79.78 | 97% | 2020-08-31 |
| 1066. | xinnnnn (xintong) | 79.76 | 97% | 2020-04-30 |
| 1067. | Andrew (dewdew7) | 79.75 | 97% | 2019-04-15 |
| 1068. | roadto100avg (auxhil) | 79.74 | 97% | 2019-01-16 |
| 1069. | Angelic (angelic_devil) | 79.73 | 96% | 2020-11-06 |
| 1070. | typer (carpeltypist) | 79.69 | 96% | 2020-12-01 |
| 1071. | powerpunch is noob (overdosed) | 79.68 | 96% | 2020-11-30 |
| 1072. | Elia (ganmen) | 79.67 | 99% | 2020-07-03 |
| 1073. | Marc (randyrandall) | 79.67 | 97% | 2018-04-06 |
| 1074. | script/script (henville12) | 79.66 | 96% | 2020-05-16 |
| 1075. | (joniboi) | 79.63 | 95% | 2018-02-16 |
| 1076. | Ryan (rlee023) | 79.58 | 98% | 2020-08-28 |
| 1077. | josh (joshbuggy) | 79.58 | 96% | 2020-05-26 |
| 1078. | Nick (nicklong1599) | 79.56 | 97% | 2018-08-21 |
| Universe | Races | Average WPM | First Race |
|---|---|---|---|
| Default (English) | 2,929 | 89.24 | October 7, 2017 |
| Instant Death Mode | 3 | 99.10 | January 10, 2019 |
| New English Texts | 1 | 108.31 | May 26, 2022 |
| All TypeRacer Texts | 1 | 76.47 | February 24, 2022 |