Does anyone know what sort of marks/extracurrics/prac subjects yada yada are usually required for a UROP spot?
(I'm speaking as a UROP student here - I have no special insight into the selection process, other than the fact that I was selected.)
I applied at the start of second year, so I just had my first year marks. I had an average of ~78, but higher marks in chemistry and biology (low H1 average) which was what I stated I wanted to be placed in. Maths pulled me down. I only had the subjects you'd do as part of a standard first year (chem and bio,) and I didn't do any prac subjects in the semester I was selected (mistake, in retrospect.)
I had attended a couple of science camps in high school (including one overseas,) and had some science-related extracurricular stuff (namely, tutoring high school students and acting as a TA for high school science teachers.)
Really, they are more interested in seeing if you're actually interested in research, so the interview is much more important year. They don't want people doing it just for the money/because it looks good on a CV/because it looks good on a med school application.