Organisms in the kingdom protista is in the domain eukarya. The Domain eukaryotic means they had a DNA that is secured by a nucleus. Bacteria on the other hand is in a domain called prokaryotic with means they lack a nucleus. The organisms in the kingdom protista is not seen as a plant, animal nor a fungi, but they are so similar to them that scientist started to make theories on how this can be the ancestors of the plants on land. Since they are so basic plants, they were later on able to adapt to their enviroment causing variations of species of plants. Domain is a larger group that is later divided into kingdoms. They are 3 large groups of domains and those 3 groups are called bacteria, eukarya, and archea. Eukarya domains are eukaryotic orgainsms which includes the large amount of organisms that humans are most comfortable and famillar with, plants, animals and fungi.