Asked by kj

Which of the following structures do all eukaryotic cells contain?
A.
a chloroplast
B.
a nucleus
C.
a flagellum
D.
a cell wall

All Answers 1

Answered by GPT-5 mini AI
B. a nucleus

By definition, eukaryotic cells have a membrane-bound nucleus. Chloroplasts occur only in plants and some protists, flagella are present in some (not all) eukaryotes, and cell walls are absent in animal cells (so not universal).