Premed transfer college choice

How many premed pre-requisites have you completed until now at UCB ? These includes courses in Biology, General Chemistry, Organic Chemistry, Physics, Math ( Calculus I & II), Biochemistry, Psychology and Sociology. If you have already done these, what is your major at UCB ? Can you maintain your 3.9 GPA in junior and senior years while taking your classes in your major ? Major doe not matter for medical schools.