You are presented with the question "Microbial fuel cells convert chemical energy into what?" and the following answer choices: 
- Something with exactly eight protons
 - Something studied by Michael Faraday
 - scraping oneself on a contaminated object
 - Something that moves in an elliptical orbit
 - skin redness and pain, possible swelling, blisters, fever, headaches
 - remove toxic material from the stomach before it is absorbed
 - Something that can be converted to kinetic and heat energy by a motor
 - Something made of glass, fiberglass, polyethylene, or vinyl

Now knowing that microbial fuel cells convert chemical energy into electrical energy and electrical energy can be converted into kinetic energy and heat energy by an electric motor, choose the best answer.


 

       Something that can be converted to kinetic and heat energy by a motor  