Infectious+Organisms+Notes+JO


 * Infectious Organisms Notes:**

Viruses hijack cells. Require cells to reproduce. A virus is genetic material (DNA or RNA) a protein coat and sometimes a lipid membrane. Viruses are hard to kill because it would involve killing our cells. (usually no treatment, just treat symptoms) Sometimes vaccines can prevent viruses
 * Part 1:**
 * Viruses**
 * Appearance**: -Generally round in shape and spiky (human viruses)


 * EX**: cold, flu, chicken pox, mono, aids, rabies, herpes…

Bacteria are small cells that do not have a nucleus. (They do have DNA though.) Bacteria can reproduce on their own (don’t need cells) and because of this we can have a way to kill them. Use antibiotics to rid body of bad bacteria.
 * Part 2:**
 * Bacteria**
 * Appearance**: - Usually look like rods (grains of rice), but can also be round, and some can even be spiral shaped.

Parasites are one or more cells with a nucleus. (No walls)
 * EX**: strep throat, gonorrhea, salmonella, E. coli…
 * Part 3:**
 * Parasites**


 * EX**: amoeba, ticks, lice, worms…

Not a virus, not a cell. It is just a protein. (If in your brain, it will eat it away and cause it to look like a sponge.
 * Part 4:**
 * Prions**


 * EX**: mad cow disease

Funguses are cells with a nucleus and a wall.
 * Part5:**
 * Fungus**


 * EX**: ringworm, yeast, athlete’s foot…