What are characteristics that all protist have in common? Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled. ... You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.

Are all protists similar?

Most protists are so small that they can be seen only with a microscope. Protists are mostly unicellular (one-celled) eukaryotes. A few protists are multicellular (many-celled) and surprisingly large. ... That means their cells all look the same and, for the most part, function the same.

What is unique about protists?

Protists vary greatly in organization. While many protists are capable of motility, primarily by means of flagella, cilia, or pseudopodia, others may be nonmotile for most or part of the life cycle. ...