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

Fact 2: Prokaryotes All bacteria are prokaryotes.

Given the two facts above, answer the question "What are single-celled organisms that lack a nucleus?" with the following options: 
- barnacles
 - bacteria
 - Most plants
 - ferns
 - orchids
 - cacti
 - PDAs
 - Leeuwenhoek


 

  bacteria       