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Marisa Miladinovic Room: 205 01/9/09 Science

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1. Diseases caused by pathogens are infectious. 2. Antibiotics can be used to kill some viruses. 3. Macrophages attract killer T cells. 4. Certain B cells make antigens. 5. An immune system overreaction to a harmless substance is a(n) allergy. 6. Cancer attacks helper T cells. 7. Pathogens are (B) viruses and microorganisms. 8. The following is an infectious disease: (B) rheumatoid arthritis. 9. The skin keeps pathogens out by (D) All Of The Above. 10. Memory B cells (B) activate killer B cells. 11. A fever (A) slows pathogens growth. 12. Macrophages (D) engulf pathogens. 13. The macrophages start an immune response is they eat antibodies. 14. The role in responding to an infection is helper T cells put B cells and killer T cells to work.