Infectious Disease Transmission/Hose Defense

Question 1

Prion

Answer 1

Protein particle w/o a genome.
Infectious and capable of producing disease
Mad cow
Slow neurodegenerative diseases

Question 2

Virus

Answer 2

Intracellular pathogen

Must PENETRATE a susceptible living cell

Question 3

Bacteria

Answer 3

Prokaryotes: autonomously replicating unicellular organisms.
Generally have no organelles

Question 4

Gram positive color

Answer 4

Purple

Question 5

Gram negative color

Answer 5

Red

Question 6

Fungi

Answer 6

Consists of yeasts and molds

Free-living, eukaryotic

Question 7

Arthropods

Answer 7

Parasite vector such as sicks, mosquitoes, flies

Question 8

Ectoparasites

Answer 8

Parasites that infest external body surfaces and cause localized tissue damage.
Mites, chiggers, lice, fleas.

Question 9

Protozoa

Answer 9

Single cell parasites that can cause disease.

Malaria, giradias

Question 10

Helmiths

Answer 10

Collection of wormlike parasites
roundworms, tapeworms and flukes
Often involve multiple organ systems

Question 11

Toxins are primarily produced by?

Answer 11

Bacteria

Question 12

Exotoxin

Answer 12

Protein released during growth.
Enzymatically inhibit or modify key cellular components leading to death or dysfxn.
Diptheria, botulism, toxic shock syndrome

Question 13

Endotoxins

Answer 13

Found in cell wall of gram negative bacteria
NOT actively released during growth
Potent activators of regulatory systems
Can induce shock, clotting, hypotension, fever

Question 14

3 types of microbial attachment

Answer 14

Site specific (mucous, skin)
Cell specific( T cell, resp. endo)
Nonspecific (moist areas, charged surfaces)

Question 15

Evasive factors

Answer 15

Polysaccharides protect microbe from phagocytic RBC's.
Toxins that deplete host WBC's
Blood clotting
H Pylori neutralizes stomach acid
Inactivation of IgA