Eukaryotic cells are more complex than prokaryotic ones because of specialized organelles. Learn how ancient collaborations between cells gave eukaryotes an important energy boost.

Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique ...

A nucleus is one of many membrane-bound compartments that distinguishes our eukaryotic cells from the prokaryotic cells of microorganisms like bacteria. Eukaryotic cells also possess energy ...