Good observation, surveillance, scrutiny, and above all you need to be dedicated and show responsible behavior.Also a person should be kind hearten in order to be a GOOD surgeon..:) Hope you become a doc and serve humanity..:)

Nucleus. Mitochondria and vacuoles can be seen easily under a light microscope which has resolution power 500X than a naked eye.However they appear just as darker regions under light microscope and for their detailed study electron microscope is used which has resolution power 250000X than naked eye.