| A | B |
| biology | study of life |
| antibiotic | medicine to kill bacteria |
| biography | story of another person's life |
| biopsy | cut out part of skin or organ to test it |
| biodegradable | will break down naturally |
| bioethics | discussing if modifying DNA or other things is moral |
| biofeedback | a machine to help modify your body functions |
| bionic | electric part ot replace human body parts |
| biosphere | place on the planet where living things can survive |
| biorhythm | cycles of life |