Upgrade to remove ads
Only $35.99/year

micro T/F test 4

Terms in this set (14)

over the past 20 years, there has been an increase in pertussis cases reported in the adolescent and adult population
true , vaccine immunity wears off over time
Borrelia burgdorferi is the causative agent of anthrax.
false, causes lyme disease
haemophilus influenzae causes influenza and meningitis
false, only causes meningitis
most cases of campylobacter are caused by foodborne organisms.
true, unpasteurized milk, chicken
symptoms of staphylococcal enterotoxicosis occur within 3 to 4 hours after eating contaminated food
true, intoxication not infection - onset is fast
the eradication of helicobacter pylori with antimicrobial drugs usually leads to the disappearance of peptic ulcers
true, eliminate bacteria then the ulcer can heal
a patient has a painless lesion on his penis, followed by a rash on his palms and soles. the most likely diagnosis is syphilis
true, lesion - chancre, primary, rash - secondary
the two light chains have an identical amino acid sequence in the constant regions and variable regions.
false, variable region is what is different between antibodies - where specificity comes from
Helper T cells are involved in both the humoral and the cellular immune responses
true, ingest and present pathogens
cancer cells can be killed by the immune system if they are recognized as " non self. "
true, tumor cells grow differently than normal cells and their surface antigens are different
coagulase-negative strains of staphylococcus are not associated with human disease
false, S epi is coagulase negative and is an opportunist
the epidermis forms an effective physical barrier against microorganisms
true, intact skin is a great barrier to infection
impetigo can be caused by either streptococcus pyogenes, staphylococcus aureus, or both
true, skin disease, crusty and weepy, caused by both
staphylococcus aureus, without antibiotic resistance, infections are effectively treated by penicillin
true, treatment depend on resistance
Sets found in the same folder