The Bible says that god is everywhere.

Jeremiah 23:24 “Can a man hide himself in secret places so that I cannot see him? declares the Lord. Do I not fill heaven and earth? declares the Lord?

Job 34:21 “For his eyes are on the ways of a man, and he sees all his steps.

Proverbs 15:3 “The eyes of the Lord are in every place, keeping watch on the evil and the good.”

Hebrews 4:13 “And no creature is hidden from his sight, but all are naked and exposed to the eyes of him to whom we must give account.”

God claims to fill heaven and earth… I presume this means in everything.

Then it would follow that if in anything everything could be explained that god is not in that thing. There would have to be something unexplainable in everything for god to be everywhere.

So, if a scientist is able to explain the processes taking place in any cell of any creature in a complete way…. god is not there.

An omnipresent god as described in the bible is impossible and could not exist.