Before Karyo means Nucleus A Eukaryote has a Nucleus. The Nucleus is separated from the cytoplasm by a two-layered Nuclear Envelope. The DNA is organized into Chromosomes. They have other membrane bound organelles.
Microtubules are present.
Their DNA is usually a circular loop. They lack other membrane-bound organelles like mitochondria and chloroplasts. Their Flagella are fundamentally different from Eukaryotes. Sexual Reproduction is absent. Other forms of genetic recombination occur.