Should I accept a predicted A* in Biology or stick with an A?

I am going to have a parents evening later today where the teachers will discuss my predicted grades. I asked them in advance and I have been predicted the following:

Maths - A* (252 UMS - had 90%+ in core modules)
Biology - A/A* (263 UMS)
Chemistry - A (247 UMS)

What interested me is that the Biology teacher told me it was up to me whether I wanted to be predicted an A or A*.

I am going to apply for dentistry.

She explained that having a predicted A* is not always the right decision. If a Uni offers you a place based on the predicted A*, but you do not get an A*, they may not offer a place. It also puts extra pressure on me to achieve an A*. I already have a predicted A* in Maths which I believe will be much more achievable for me, so should I just go with the predicted A?

Thanks in advance! :smile: