I took the practice 2007 ADA test and did MISERABLE, but did 2 or more points better on each of the sciences on the real DAT! But everyone here says the 2007 test was way easier.... sooo, take my word with a grain of salt! Haha. I've said it before - I think when you take practice tests you get in a mindset of "Hey I think this is right, but I don't know. I don't care. I will go back and check my answers." instead of really taking your time and thinking out questions. But when its the real DAT, your adrenaline will be pumping and you will be much more focused and perform better because your REAL scores are at stake! I think you will be fine! Bio is tricky, so just read through Feralis' notes on topics you're unsure of.