You are presented with the question "What are single celled organisms that do not have a nucleus?" and the following answer choices: 
- Most plants
 - nucleus
 - ferns
 - fossil fuels
 - bushes
 - Eukaryotes
 - leech
 - bacteria

Now knowing that prokaryotes are single-celled organisms that lack a nucleus and prokaryotes are usually microscopic and bacteria is an example of a prokaryote, choose the best answer.


 

        bacteria 