Question

what is a difference between prokaryotic and eukaryotic cells?

a. prokaryotic cells always have cell walls, but eukaryotic cells do not.

b. eukaryotic cells do not have membrane - bound organelles, but prokaryotic cells do.

c. prokaryotic cells do not have a nucleus, but eukaryotic cells do.

d. organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.

Explanation:

• Option A: Some eukaryotic cells (e.g., plant cells) have cell walls, so this is incorrect.
• Option B: Prokaryotic cells lack membrane - bound organelles, while eukaryotic cells have them. This statement is reversed, so it's wrong.
• Option C: Prokaryotic cells have a nucleoid region but no true nucleus, and eukaryotic cells have a well - defined nucleus. This is a correct difference.
• Option D: There are unicellular eukaryotes (e.g., yeast), so this statement is incorrect.

Answer:

C. Prokaryotic cells do not have a nucleus, but eukaryotic cells do.