<p>I took the one on the ETS website & the one in the packet. Anyone know of any others?</p>
<p>A friend of mine took the biology subject test and studied from a review book from either Kaplan or Princeton Review, so you might want to check that out.</p>
<p>I ended up buying a gre subject test preparation guide for the biochem test. The book was expensive and only contained two practice tests, but I don't know how else I would have prepared comprehensively.</p>
<p>I don’t know any good free books, but eBook collection at grebio (dot) com was very helpful.</p>