Question

which of the following is not a difference between prokaryotes and eukaryotes?
a. eukaryotes have chromosomes but prokaryotes have circular dna.
b. eukaryotes have a nucleus but prokaryotes dont.
c. eukaryotes have membrane - bound organelles but prokaryotes dont.
d. eukaryotes have a cell membrane but prokaryotes dont.

Explanation:

Both prokaryotes and eukaryotes have cell membranes. Prokaryotes have a simple cell - membrane structure, and eukaryotes have a more complex cell - membrane system along with other membrane - bound organelles. The key differences between prokaryotes and eukaryotes include the presence of a nucleus and membrane - bound organelles in eukaryotes, and circular DNA in prokaryotes compared to linear chromosomes in eukaryotes.

Answer:

Eukaryotes have a cell membrane but prokaryotes don't.