Ace the Biology CLEP 2026 – Get Prepped to Conquer Science!

A prokaryote is a type of organism that is unicellular and does not have a nucleus. This sets it apart from eukaryotes, which are unicellular or multicellular organisms with a nucleus. Option A, a unicellular multicellular organism, is contradictory and cannot be true. Option B, a unicellular organism with a nucleus, is incorrect because that describes a eukaryote. Option C, a multicellular organism with a nucleus, is incorrect because that also describes a eukaryote. Therefore, the correct answer is D, a unicellular organism without a nucleus.