Exam (elaborations)
CIH. Biohazards Questions and Answers 2024
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Exam of 4 pages for the course CIH at CIH (CIH. Biohazards)
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CIH. BiohazardsBiohazards - answer Bacteria, viruses, fungi, parasites, rickettsia, prions and insect-
transmitted diseases. NOT MUTUALLY EXCLUSIVE.
Bacteria - answer Organism composed of a simple, naked DNA chromosome
(sometimes 2) w/o nuclear membrane (prokaryote) 1um - 5 um (respirable)
tuberculosis, tularemia, cholera, E. coli, tetanus, anthrax, brucellosis, leptospirosis,
plague. Most likely to cause serious brain damage.
Viruses - answer Live intracellular parasites, DNA or RNA and protein coat called a
capsid, 20 nm - 300 nm (smallest of all biohazards), ebola, Newcastle disease, common
colds, polio, rabies, hepatitis.
Fungi - answer biological kingdom of living matter, digest food outside body by releasing
enzymes. Need water and nutrients to live. Reproduce thru spores. Diseases
aspergillus, histoplasmosis, bagasse’s, maple bark disease, bagasse’s, ringworm,
athele's foot.
Parasites - answer Organism taking substances from a host. Disease example:
Toxoplasmosis (contamination from cat droppings, trichinellids (roundworm from poorly
cooked foods eg pork).
Rickettsia - answer Parasite living within the cells of ticks and mites. Disease example:
Rocky Mountain spotted fever, lime disease.
Prions - answer Proteins w/o a nucleus that are infectious. Diseases examples: Bovine
spongiform encephalopathy (mad cow), Creutzfeldt-Jakob disease.
Insect transmitted disease - answerMosquitoes and ticks most prevalent. Disease
example: Malaria, west nile fever (africa and s. america forests), plague (flea),
babesiosis.
Biological risk - answerPossibility to develop illness from exposure to single biohazard
agent depending on susceptibility. No TLV established from biohazards
Polymerase Chain Reaction - answerOSHA Methods to establish id type of bacteria
RETER - answerReservoir, Escape from R, Transmission, Entry into the new host,
Reinfection.
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