I would give them a jingle and ask to be 100% sure. But I'm going to go ahead and say they're strict about it. They certainly have stacked pre-reqs, but they expect them all. I'm aware of only a few exceptions they've made for people that were worked out one-on-one after acceptance. I also know at AZ they had an issue with people being accepted and just hoping to have pre-reqs waived (like micro or something). So I wouldn't expect them to budge after they've stressed this. For this very reason, my schedule last semester consisted of a 1-credit micro lab.