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CP virus & immunity
virus and immunity
| Question | Answer |
|---|---|
| Antibiotics | are used to clear up bacterial infections. |
| virus | nonliving because it cannot reproduce on its own |
| general structure | outer protein coat and RNA or DNA |
| lytic cycle | after entering the host cell, the virus hijacks the DNA, replicates, bursts and releases new viruses. |
| Lysogenic Cycle | after entering the host cell, the virus is integrated into th host cell and ruptures after several generations. |
| Varicella | virus that causes chicken pox/shingles |
| Herpes Simplex I | virus that causes cold sores |
| first line of defense | skin and mucus |
| 2nd line of defense | release of chemicals from cells |
| Helper T cells | “activate” white blood cells called B cells |
| B cells | can create memory cells that stay in the body in case another infection arises |
| what if a cell is already infected? | Helper T cells alert Killer T cells and poke holes in the infected cell to kill it |
| active immunity | comes from exposure to a disease; longer lasting |
| passive immunity | comes from mother to baby; not permanent |