Question

which statement is true of eukaryotes but not of prokaryotes?
o they must contain a nucleus.
o they do not have membrane - bound organelles.
o they are always single - celled.
o they must be multicellular.

Explanation:

Eukaryotes have a true nucleus surrounded by a membrane, while prokaryotes lack a nucleus. Prokaryotes have no membrane - bound organelles, and can be single - celled. Eukaryotes can be single - celled (e.g., yeast) or multicellular.

Answer:

They must contain a nucleus.