In the six kingdom classification, the Protista Kingdom contains all single celled organisms which are eukaryotic, meaning which have a nucleus. They are called protists.
The key concepts in Part 1 are briefly reviewed. Organisms in the Protista Kingdom are virtually all single-celled. Most are heterotrophic, some are autotrophic like algae, a few like euglena are both. Most reproduce asexually, but occasionally some also sexually which produces genetic variation and long term evolutionary benefits.
