Question

Which structure is unique to eukaryotic cells?

a. DNA
b. cell membrane
c. ribosomes
d. nucleus

Answer 1

The correct answer is D

Answer 2

The answers D. Nucleus because both Eukaryotic and Prokaryotic cells have DNA (its circular in PK and Linear in EK).
Both cells have ribosomes and both have a cell membrane. However Prokaryotic does not have a nucleus and only Nucleoid DNA.

The blue wiggle is the nucleoid DNA, and the red dots are ribosomes