Cellular Basics

Structures Inside Cells

Do all cells have a nucleus?

No, not all cells have a nucleus. Prokaryotic cells do not have an organized nucleus, but most eukaryotic cells have a single, organized nucleus. Red blood cells are the only mammalian cells that do not have a nucleus.


This is a web preview of the "The Handy Biology Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App