Hmm, I wonder how long this thread will last
Personally, my vote goes to single cell organism.
My mother and sister are evangelical, they do believe in every word as literal. That's fine, we just don't talk about it much. There is no reasoning about it, and I don't even believe in the fundamentals of religion so there is no real reason to debate it. Besides, I love them too much to be disrespectful of their beliefs to them, and I always hope for the same from them.