You are presented with the question "Much of protein transport in a cell requires what?" and the following answer choices: 
- protons
 - recycling
 - oxygen
 - energy
 - atoms
 - Nutrients
 - walls
 - Energy.

Now knowing that vesicle transport requires energy, so it is also a form of active transport and much of protein transport in a cell occurs via coated transport vesicles, choose the best answer.


 

    energy     