Answer:
They must be multicellular
Explanation:
Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane. Organisms that have eukaryotic cells include protozoa, fungi, plants and animals.
All eukaryotes are multicellular with complex organelles. The nucleus is bound by the nuclear membrane. Prokaryotes are however unicellular, they lack complex organelles and a nuclear membrane. The hereditary material is suspended in the cytoplasm.