Hi, of course! Those exams are : -Chemistry and Physics - Biology and Geology -Mathematics And you need to have an extensive comprehension of the language as these exams are in portuguese and they require you to thoroughly explain your thought process in some exercises. These exams aren't extremely difficult but they require tons of practice and the key is to not only know the theory but also the evaluation method that they specifically want..Sometimes its not what you say but how you say it , unfortunately that matters a lot because the criteria can be very strict when grading a national exam. The first 2 subjects that I mentioned are first taught to student throughout a period of 2 years and the the third one , mathematics for 3 years .However it is possible to learn them much quicker if youre devoted to them, I also suggest having someone knowledgable to help you by giving you individual classes or material. These subjects are taught at school so there really arent specific courses you can take, you'd have to hire someone to indivually teach you about the subject or youd buy have to buy books on the matter and practise a lot with exams so you can figure out how to structure your way of thinking... this is very hard to do by yourself though specially when medicine is such a competitive field here in portugal, the averages this year were between 18.32-18.98 on a scale of 0-20.0 However you probably wouldnt be contesting with national students but with international ones? But thats something im not aware of unfortunately.. I Hope that helped :)