1. bio =life

2. antibiotic a medicine used to save lives because it destroys harmful bacteria and cures infections

3. The doctor wrote a prescription for an antibiotic when Mariah had an ear infection. Penicillin is an antibiotic that is used by many hospitals.

4. autobiography a piece of writing written by a person about his or her own life

5. Barack Obama wrote an autobiography titled Dreams From My Father. Natalie inferred that The Story of My Life was an autobiography.

6. biography a piece of writing about a person’s life written by someone else

7. Fourth grade students read a biography named My Brother Martin. Sean enjoys reading biographies about sports figures.

8. biologist a person who studies living things

9. Jane Goodall, a famous biologist, specialized in the behavior of chimpanzees. By studying pea plants, Gregor Mendel became a famous biologist who explained genetics.

10. biology the study of living things

11. Our next science unit is the study of plants, which is a part of biology. Reagan enjoys learning biology, especially the study of animals.

12. biopsy the removal of living tissue from the body for diagnostic examination

13. Dr. Hall recommended a biopsy after examining the unusual lump. After a biopsy is performed, laboratory technicians carefully examine the tissue.

14. biosphere the zone of planet Earth where there is life (between the deep crust and the lower atmosphere)

15. All plant, animal, and human activity occur in the biosphere layer. When orbiting the Earth, the space shuttle can observe the biosphere.

16. macrobiotic diet a diet thought to help people live longer because it focuses on natural foods

17. Whole grains, vegetables, and beans are the mainstays of the macrobiotic diet, which some people believe can prevent or treat cancer. Proponents of the macrobiotic diet plan say that macrobiotics has made them feel more energetic and vital, boosted their immune systems and even improved their memory.

18. neurobiology the study of the nervous system of living things and how it helps the living things learn and react

19. Neurobiology is a complex science that studies the brain and nervous systems of humans and other animals. Neurobiologists can now study the way genes affect the structures of the brain.

20. symbiosis how two different living organisms live together and depend on each other

21. An example of symbiosis in the ocean is shrimps that will clean fish. They remove parasites, dead tissue, and mucous. Fleas and mosquitoes feed on blood from other organisms. In this type of parasitic symbiotic relationship, the host needs to stay alive and it is not damaged greatly.