You are presented with the question "what are single-celled organisms that lack a nucleus?" and the following answer choices: 
- Leeuwenhoek
 - orchids
 - Most plants
 - barnacles
 - PDAs
 - bacteria
 - cacti
 - ferns

Now knowing that prokaryotes are single-celled organisms that lack a nucleus and prokaryotes All bacteria are prokaryotes, choose the best answer.


 

      bacteria   