Options for graduate school?

[R.S.]

I'm a current Junior with a 3.75 GPA (3.651 major GPA) at Brooklyn College. I'm currently during research in a lab focusing on insulin-resistance in mice, and by the time I graduate, should have 2 years of research completed. I'm looking into graduate schools right now, and have a few questions on what I should do in order to get into a program.

1) I'm currently taking Physics I, and was wondering how crucial Physics II is to get into a biology program focusing on Ecology and Evolution?

2) Does anyone know anything about the CUNY Graduate program?

3) Will my undergraduate college be detrimental to getting into graduate school? I have around 75 credits in the sciences/maths (Evolution, Comparative Physiology, Microbiology, Molecular Biology, Organismic Biology, Zoology, Chemistry I and II, Organic I with plans to take Organic II next semester, Botany, etc), but am worried that the fact that I go to a CUNY will weaken my transcript in the eyes of admissions.

4) Are there any courses/steps I should absolutely be taking right now? I've already started to study for the GRE and plan on also taking the subject test in biology.

Any advice/comments/suggestions would be greatly appreciated!