You are presented with the quiz "Protein transportation between the ER and the Golgi require what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "vesicle transport requires energy, so it is also a form of active transport" and "proteins are transported to and from the ER via vesicles to the Golgi". 

So, what's the best answer to the question?


 

 energy          