Oh no she didn't.
<-3rd year bachelor in biology here, buckle up.
For convenience i broke it up into 3 mayor questions.
Question nr.1: what is a science?
The most fair and commonly accepted definition of a science is that it has to consist of statements that can be tested and falsified. If they are tested and falsified they are no longer a science.
In ancient Rome the idea of a flat earth was a legit science, modern day flat earth theories are not because the hypothesis of a flat earth has since been falsified.
Creationism is in a grey area because it consist of both unfalsifiable hypotheses and falsibiable ones that have been falsified centuries ago.
Biology is by this definition a 100% legit science.
Depending on what your view on art is biology may be an art as wel i guess, hell i've worked with biologists who sure thought they were skillful artists, but its definantly a science.
Question nr.2: is life a purely physical phenomenon?
3 major hypotheses exist(ed) about this:
1) fysicalism: living creatures are 100% fysical matter because when you break them down into their smallest parts it's just atoms, elektrons, and so on and nothing else.
2) vitalism: beside their physical form, living creatures also have an "elan vital" (a soul if you will) that brings the dead matter to life. Vitalists claim it HAS to exist because living creatures work towards goals, unlike say a rock. Vitalism was big about 200 years ago when a lot could simply not be explained without bringing in some kind of soul.
3) Descartes' dualism: pretty much the same as fysicalism but claims only humans have a soul. This idea made him pretty popular in his days because it meant you didnt have to feel bad for hurting creatures besides humans. Sure a dog would howl if you kicked it but it didn't mean anything, that's something it just does kinda like a door that creaks. From here it shouldn't be hard to see how this idea could easily be extended to humans of say, a different social status or a different race... Yeah you can see where this is going.
So who takes home the gold? Wel both vitalism and dualism bite the dust because by now we know that living creatures don't consciously work towards goals, it's just what evolution "taught" them. Also, a lot of things that couldnt be explained without use of an elan vital have been explained far more coherently by now. And even if we still haven't that doesn't mean we never will. Finally, vitalists haven't made any progess to figuring out what exactly an elan vital is in 200 years.
Disclaimer: all this only applies to "elan vitals" or "souls" as a scientific phenomenon, souls in the context of religion is an entirely different story.
Question nr.3: So living creatures are 100% physical, does that make biology a form of physics?
Believe it or not, yes it is. *gasp* BUT only in a perfect universe.You see in the end wer' all studying the same world here. The different sciences are just an arbitrary division based on what approach is preferred. Since it's the same world they wil come to the same conclusion. Example: when presented with the question "How did sexes come to be and why?" a biologist will try to explain it as a consequence of evolution while a physicist may try to use some sort of calculation. If both sciences have reached some sort of perfect form they WILL both come up with the same answer. However this doesn't work in this imperfect reality. You probably realize a question like the one above can't be solved by calculations, not even by double integrals. Therefore biology has a "right" to exist independently from physics. Will science ever reach such a perfect form? Who knows but it sure hasen't yet. All this goes for ALL sciences by the way, claiming biology is a form of physics is just as valid as claiming physics are a form of biology or that math is a form of geology.
Despite all this physicists LOVE to claim biology isn't much of a science because "it only describes things as they are, it doesn't form any rules of cause to consequence."
Bzzt wrong, yes we do we just call them models or patterns. Perfect example is Lothka-Voltera's pattern. It's a bunch of mathematical formules (hang out hear me out) that can be used to calculate what will happen to a population of predators and a population of prey when they meet. These formulas work for ANY predator + prey from lions to flasheating fungus (yeah that's a real thing). Math nor physics see any notable relations between these creatures but biology does: they are predators. Therefore it is biology, not math that makes these formulas work. In other words biology is explaining something that math nor physics can, giving it even more of a right to exist.
So there you have it, was there some sort of bet involved? I wouldn't mind a cut of the loot.
ps.: sure hope this doesn't get deleted for low content
Sources:
-Philosophy of biology by Elliot Sober
-My awesome taxonomy prof.