But that falls back on the above: To what extent do single-celled organisms actually perform these tasks? I, personally, don't know.
Well then is a virus conciouss or have logic? It moves about and finds a cell and gets into the parts of the body where it can duplicate and tricks the mitochondria and screws with enzymes and inflitrates the nucleus and reproduces. Does that make it aware of what it's doing? No. It's an inanimate object working entirly off of chemical/mechanical reactions. So the fact that cells do seemingly complex things isn't an argument in itself at all.