4 year MD program skype entrance exam

Hi,

On the website it states that the skype exam (for the 4 years MD program) consists of:
3 biology questions
3 chemistry questions
2 physics questions

I have a BSc in Biochemistry and we didn't do so much physics. 1 modules had some physics. I am a little worried about this exam because it was 2 years ago that I graduated and might have forgotten some biology and chemistry - going through all my modules to remember is not practical at all! Does anyone know if they have actually states which topics within chemistry and biology that are more likely to ask about. Also, what kind of physics questions are they likely to ask?

Thanks