You are presented with the question "What help prokaryotes move?" and the following answer choices: 
- maps
 - heat energy
 - microns
 - Energy
 - microbes
 - microtubules
 - sensory neurons
 - Chemical energy

Now knowing that flagella help prokaryotes move and cilia and flagella are composed of microtubules, choose the best answer.


 

      microtubules   