Question

which of the following is true of all protists?
they are all heterotrophs
they are all unicellular
they are all autotrophs
they are all eukaryotes

Explanation:

Protists are a diverse group. Some are autotrophs (like algae), some are heterotrophs (like amoebas). They can be unicellular (e.g., amoeba) or multicellular (e.g., some algae). But all protists are eukaryotes as they have a true nucleus and membrane - bound organelles.

Answer:

They are all eukaryotes.