Curiosity LGBT: Your opinion- Am I Biual or Panual?

I've been reading on here a lot about ity verses panuality. I've always considered myself because I like both guys and girls and well as an variation between the two genders (, transual, physically both es, etc.). But now I've been reading that this is actually considered "panual". Why is that? This is out of pure curiosity. There are biologically only two sexes, so can someone ACTUALLY be more than ? Or does it depend on the person if he/she see's things from a biological view (only two sexes, genetically) vs. another form of gender ociation? Would you personally consider me or pansexual?