How challenging is BIS 2B or 2C?

<p>Thanks!
I’m not good at math at all and never been super smart, would I still do okay in chem? Another thing I’m afraid of is that everyone is a premed student there, classes are challenging, and I would have a harder time keeping my GPA up at UCD.
Also, any tips to get a head start in BIS 2A-2C? I might as well do something over the summer…</p>

<p>Also, how challenging is it to get into those classes?</p>