No scientific field is free from religious presupposition. Naturalism permeates all of them (geologic column is naturalistic in its assumptions; evolutionary biology assumes spontaneous generation and a professor at the secular university I attended even wrote in the school paper that Miller's experiment proved life could spontaneously generate - a lie; naturalistic physcisists teach that the universe suddenly sprang into existence from nothing; we have JW Gould, now a theist, who said that people were no more significant in this cosmos than a "dried twig" - no religious assumption there!).
On the other side, in chemistry, we have W. Dembski and ID theory which is theistic in its assumptions, etc. I can cite examples till I'm blue in the face. How many will convince you? In short, yes, no field is exempt from religious presupposition. They ALL have the underlying belief about God's existence.
However, modern science is based on methodological naturalism (once again: methodological not metaphysical) because it works. You can see this when people with different religious backgrounds arrive at the same results.