It's recommended because Biology is applied Chemistry, and Chemistry is applied Physics.
To understand biochemistry in its theoretical context (particularly the quantum mechanical model of the atom, emission spectra etc), you need at least basic knowledge of what quantum mechanics is (Physics 1BB3, which in turn requires knowledge of linear systems (Math 1B03)). You may learn such details in your other courses, but these are covered in some depth in Physics 1BB3.
Whether or not you choose to explore this venue, or completely ignore it is up to you. That's why the courses are recommended though, because the university doesn't wish to discriminate against those who do want to (although I admit, they should probably be a bit more transparent about why they'd be required). If you don't take those courses, you're closing that door entirely (albeit, most students are apparently oblivious to this fact anyway).
To use myself as an example, since I took physics first and things like organic chemistry later on, I think of chemistry/chemical reactions solely in terms of physics, namely that two atoms fall into a 'well' of mutual binding energy. Do you need to fully grasp that concept to know that 2 Na+ + Cl2- <-> 2 NaCl? Probably not. Do you
need to in order to take a course focused on the quantum model? Most likely.
Take home point: Taking physics makes you look at chemistry (and hence biology) differently. For better or for worse, it's your decision.
Last edited by Incognitus : 12-02-2013 at 04:05 PM.
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