My friend and I took this test together so we're going to let you guys know what we thought....
Verbal Reasoning: For me, hands down the hardest. It was harder than ANY practice test I've ever taken... including Kaplan verbal and old AAMC tests. The passages were massively long... ALL of them. With older practice tests, there would be long and short passages... today, though, they were ridiculous. Ridiculous. Verbal was my strong point and I feel like I'll be lucky if I get a 10.
Biological Sciences: The questions were definitely way more passage based. There were few discrete questions. There were so many theories and hypothesis... you had to make a lot of conclusions on your own. Too many inference questions. Memorizing everything in your biology review books would not have helped at all... we know every single dang hormone and everything about every system in the body- none of that was tested. Genetics was pretty much the only thing, which was not too bad. As for organic chemistry... hardly any, but was definitely extremely confusing with the passage information.
Physical Sciences: I honestly don't really remember. It was okay.
Sorry not too insightful, but we firmly believe this was the most difficult test EVER. Everybody from the testing center felt the same way- especially where verbal was concerned.
Never thought I'd contemplate voiding my scores and ended up contemplating if I should or not... lol