Across
- 4. Internal balance of living things
- 5. Protection from disease, either naturally or from a vaccine
- 6. Harmful living thing
- 7. Released by white blood cells in response to antigens
- 9. gas used for cellular respiration
- 11. sugar molecule (food) for the body
- 12. Carrier of oxygen and carbon dioxide
Down
- 1. Shaped proteins on the pathogen that make the body respond
- 2. Cell that releases antibodies
- 3. the energy molecule
- 8. The movement of molecules from higher to lower concentration
- 10. a (mistake) response to a non harmful thing such as peanut butter