Bio and chem test help

<p>Since tests for bio and chem are coming up for everyone I just wanted advice on how to effectively study for these tests and what type of questions they include
Chem test only has 25 questions for 1 hour and 20 minutes so it is most definitely math questions rather than concept questions like bio.
How do the skim reading pages for bio help out?
Thanks in advance</p>

<p>As someone in Bio, I would too, love if someone who has done well in Bio can reply.</p>

<p>Also, I don’t understand why the exams are on the weekends. Especially smack in the middle of the day. At least have them early if so.</p>

<p>Can anyone answer why this is?</p>