all single celled organisms are prokaryotes sorted by

relevance

Archaea in particular love extreme environments.

Animalia Organisms are placed into these categories based on similarities or common characteristics.

We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739.

Mitochondria My-toh-KON-dree-uh may have been one of these early victims.

These organisms are small and single-celled.

Bacteria: Single Celled Organisms That Thrive in Multiple Environments Bacteria live and thrive everywhere on the planet: atop mountains, at the bottom of the world's deepest oceans, inside the digestive tracts of both humans and animals, and even in the frozen rocks and ice of the North and South poles.

Chemoautotrophs obtain their energy from inorganic compounds, and they build their complex molecules from carbon dioxide.

Animals, plants and fungi all fall under this umbrella, along with many other single-celled organisms, such as yeast.

Plants have special tissues called meristems where growth occurs.

The is a selective barrier, meaning that it lets some chemicals in and others out.