Buy the Mastering Biology, but don't spend the extra money to buy the eText for Bio. You can find your bio textbook on LibGen for free.
Don't know about chem. Hope this helps.
FYI I actually had really bad experiences with Groff, but I took him for 161, so 6 years ago. I was talking about Sealey's Ecology class.
i'm off-campus, but unless you're paying for the internet, but from my experience, you're going to have to weasel your way around, using non-standard ports. you will likely have to set up a proxy, and send it over smtp/pop if you only use webmail.
http://en.wikipedia.org/wiki/Internet_Relay_Chat#Technical_information
http://www.mirc.com/proxies.html
what's the irc for? i've got an asus rt-n16 running tomato w. optware so i could potentially host an irc server if i had people to mod/admin.
EDIT: lol, you're running a client, not server. much of the information still stands. i would almost be willing to set up an IRC proxy, but i need to make sure i can lock that shit down.