How could molecules and atoms both be elementary particles? I'm making no such implication. Nor did I mention anything about quantum effects.
Biology is really not much more than a self-replicating subset of chemistry. Without evidence to suggest something sort of psuedo-supernatural difference between the simplest of single cell organisms and homo sapiens, I think the only reasonable position is that whatever it is that "preforms" intelligence falls under the realm of the physical sciences.
Until we acquire evidence to suggest otherwise, it is silly to assume anything else.
Longbets is fine, but such unfounded speculation doesn't have much use in serious conversation.
"proving the position proving the position"
It seems like you might be misunderstanding the role of science.