IB Predicted Grades and UC admissions?

So my predicted grades for IB are really good, and I’m afraid I might not be able to meet them…

For example, what happens if I’m a predicted 6 and I get a 5? Or if I’m a predicted 7 and I get a 6? Will they deny my offer because of that?

No they will not. Once your IB test results come in they would have already accepted you. The only thing they can do is not let you opt out of a year/take a sophomore stand as a freshman if you don’t get enough points.