Ecoli

You can be exposed to Ecoli from contaminated food or water. Ecoli is a unicellular and is a prokaryote. They are in the bacteria kingdom and the eubacteria domain. It is an heterotrophic organism. They get into raw beef or raw cookie dough and eat the nutrients out of it. They are asexual and can double in numbers every 20 mins. It's level of organization is prokaryotic.

Eubacteria: Ecoli