Can i still get into a good UC school?

I'm a sopre in high school and I did really bad this semester. I got a B- in Algebra 2, A- in Driver's Ed (required), an A in PE (required), and a C- in Spanish 2. I really screwed up in spanish and algebra 2. My total GPA right now is 3.55 and my rank is 140th out of 340. In total, I have 12 A's and 7 B's and one C-. I'm wondering if that C- will keep me going from a UC school because I heard that if you get a C then you automatically don't qualify to apply. I am on block schedule, in case you are wondering why I have so many grades already. For those of you who don't know what block schedule is, it is when you take half of your cles half the year so for example, i take these four cles until December and then the other four in January after Christmas break. We have 4 finals every year. 2 Midterms and 2 Finals. I really screwed up in algebra and especially spanish so I'm wondering: Can i still get into a UC school? The schools i want to go to are UCLA, Berkeley (unlikely), San Diego, Davis, or Irvine. I am taking AP World History next term. I was wondering if I brought my grades up could I still go to a UC School? Please help.