Question

chapter 18 & 21 test
which cell structure distinguishes members of the domain eukarya from other organisms?
cell wall
cytoplasm
nucleus
cell membrane

Explanation:

Eukaryotes are defined by having a membrane-bound nucleus that holds their genetic material. Cell walls exist in prokaryotes (like bacteria) and some eukaryotes, cytoplasm and cell membranes are present in both prokaryotes and eukaryotes. Only the nucleus is unique to eukaryotes among these options.

Answer:

nucleus