[JesseK]

I wouldn't worry about people who ask why someone is not an engineer after being in FIRST. The world needs more problem solvers than explicit engineers. Though don't ever tell that to an engineer...

From what I remember about Biology, much of the science is devoted to cell mechanics and interactions at the molecular level. If you're interested in that aspect, the robotics equivalent would be Materials Science; it has a heavy Chemistry pre-requisite, which already aligns with your Biology major.

Another interesting applicable field would be Nanotechnology, which seems to be a combination of Materials Science, Chemistry, and Physics. You probably wouldn't see any nanotech classes until your 4th year or grad school though.

Good Luck!