Summary:
- Kingdom Protista includes all eukaryotes that are not animals, plants, or fungi.
- It consists of both single-celled and multicellular organisms.
- There are thought to be between 60,000 and 200,000 protist species, and many have yet to be identified.
- Some protists are responsible for a range of serious human diseases, such as malaria and sleeping sickness.
- Protists can look very different from each other, and some are tiny and unicellular, like an amoeba.