All Eukaryotes Contain

Question

All eukaryotes contain
A) a membrane-enclosed nucleus.
B) mitochondria.
C) hydrogenosomes.
D) a nucleus, mitochondria, and hydrogenosomes.

Accepted Answer

Eukaryotes are defined by the presence of a membrane-enclosed nucleus, distinguishing them from prokaryotes, which lack a nucleus. Not all eukaryotes have mitochondria (some have been replaced by related organelles like hydrogenosomes), and hydrogenosomes themselves are not present in all eukaryotes.