You are presented with the question "The transport of what requires energy?" and the following answer choices: 
- communication
 - microorganisms
 - colors of the spectrum
 - Something to move
 - salamanders
 - Neurotransmitters
 - an object
 - Veins and arteries.

Now knowing that vesicle transport requires energy, so it is also a form of active transport and neurotransmitters are released from vesicles, choose the best answer.


 

      Neurotransmitters   