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Sookdeo-Unit 4

Immune & Infectious Diseases

pathogen an organism, a virus or a protein that causes disease
immune system made up of tissues and specialized white blood cells that recognize and attack foreign substances in the body
macrophage a white blood cell that destroys pathogens by engulfing and digesting them (eating)
T cell coordinate the body's immune response while others attack the infected cells (aka helper T)
B cell make antibodies that attach to a specific antigen
antibody specialize protein that binds to a specific antigen to tag it for destruction
immunity ability to resist or recover from an infectious disease
vaccine substance prepared from killed or weakened pathogens that is introduced into the body to produce immunity
noninfectious disease diseases that are caused by hereditary or environmental factors (you catch it)
infectious disease a disease caused by a pathogen (you can catch it)
antibiotic a medicine used to kill or slow the growth of bacteria or other microorganisms
antiviral drug a drug that destroys viruses or prevents their replication
bacteria Made up of prokaryotes (no nucleus) that usually have a cell wall and reproduce by cell division. Causes diseases like TB, Strep throat, sinus infections and food poisoning
virus Depends on living things to reproduce. Insert their DNA into a cell and take over the cell so it will reproduce quickly and infect other cells. Causes the common cold, flu and HIV.
fungi Gets energy by absorbing materials and have cell walls but no chloroplast. They can be single-celled or multicellular. This group includes yeasts, molds and mushroom. It can cause skin diseases such as ringworm and athlete's foot.
parasite an organism that lives on and feeds on another organism, called a host; usually harm the host; examples are a protist that cause malaria, worms, or contaminated food or water
Created by: dsookdeo