An antioxidant is something that mainly comes from fresh fruits and vegetables. It is important for the body, because it prevents oxidation of molecules in our bodies. Which helps prevent or slows down diseases or illnesses. So you may get a similar question in your Jamba Juice interview, but be ready to explain: What is a GMO? What does organic food mean? What is wheatgrass? Knowing these simple questions will definitely build your confidence level and will help you in your job interview.