Well, here is what I think... It might be possible... Reason? Life doesnt have to be what we think it is. Life would definitely have formed a different way than it has on earth. There may be another way how the first form of life was made. The story would definitely he different, and the end result would not be human. But there is one universal thing, energy! Life requires energy to perform. How a life form gets that energy doesnt really matter, energy is energy. They could break down different substances to get energy. I guess what I am trying to say is that what we know probably doesnt apply to everything.
My vote? Its possible.