Fact 1: Prokaryotes are single-celled organisms that lack a nucleus.

Fact 2: An organism is a living thing.

Given the two facts above, answer the question "Prokaryotes are single celled living things in the animal kingdom that don't have a what?" with the following options: 
- epidermal
 - genus
 - complex
 - extinction
 - food
 - nucleus
 - properties
 - alleles


 

      nucleus   