2021 Flashcards
which enteric bacterium is acquired as a zoonotic infection, often from undercooked chicken, and causes a mild, selfi-limiting gastroenteritis
campylobacter jejune
hemolytic uremic syndrome is a complication of infection by which organism
escherichia coli O157:H7
which enteric bacterium can invade M cells in the gut, survive in macrophages, and eventually infect many different organs in the body
salmonella enterica serovar typhi
which pathogen resides in the stomach and induces the host to secrete urea through the mucosal epithelium
heliocobacter pylori
(and metabolizes urea to make local environment more basic, increase pH)
which of the following viruelence factors is the dissaccharide-tetrapeptide component of bacterial peptidoglycan
tracheal cytotoxin of bordetella pertussi
(shed from bacterial cells instead of being absorbed and recycled)
these gram positive rods established themselves in the throat and kill cells by expressing a tocin that ADP-ribosylates elongation
corynebacterium diphtheriae
which of the following describes pesudomonas aeuriginosa
can grow at temperatures up to 43C
(depends on alginate production to produce biofilm)
blockage of acetylcholine release from host cells is caused by a virulence factor of which bacterium
clostridium botulinism
what spore forming bacterium produce A-B exotoxins that block GABA release from axon endings of interneurons that control motor neurons within muscles
clostridium tetani
which bacterium is considered the keystone pathogen for periodontitis
porphyromonas gingivalis
which bacterium is considered the keystone pathogen for periodontitis
porphyromonas gingivalis
what haemophilus influenzae virulence factor allows strains of these bacteria to cause systemic infections
capsule b
which of the following is true for leprosy
individuals normally clear the bacterial agent via cell-mediated immunity
(and strong TH1-response by infected individual results in a good prognosis for recovery)
a zoonotic disease is associated with which of the following bacteria
borrelia burgdoferi
rash- early
arthritis-late
what is a symptom of late stage, chronic disease associate with borrelia burgdoferi
arthritis
which organism is an obligate intracellular pathogen
chlamydia trachomatis
(and rickettsia)
what is true about Mycoplasma pneumoniae
cells pass through filter that traps most other bacteria
what is uniquely associated with congenital syphilis
hutchinson’s incisors
a pregenant 22 year old women was seen at urgent care and had fever, malaise headache and macular rash over body. and ulcer on vagina that went away
diagnosis made?
she has secondary syphilis
which bacteria are initial colonizers of the dental biofilm, binding to the salivary pellicle
streptococcus gordonii
which oral bacteria are strongly associated with acute necrotizing ulceratize gingivitis
spirochetes plus fusobacterium nucleatum
which genus of bacteria are typically associated with salivary gland infections
staphylococcus
which of the following is characterisitic of periodontal abscesses
infection contains multiple anaerobic species
what virus is responsible for about 30% of cases of the common cold, has an RNA genome that can be directly translated into protein, but also requires a second phase of translation to produce several smaller mRNAs transcribed from a negative sense copy of RNA genome
coronavirus
nonpolio enteroviruses such as EV-D68 are associated with increased cases of what disease as a possible emerging epidemic
acute flaccid myelitis
what virus has an RNA genome that can be directly translated into protein, and transcribed more mRNAs, all of which are the size of the fill genome, from a negative sense copy of the viral RNA genome
rhinovirus
which virus genome is directly translated into proteins upon entry into a cell
poliovirus
what are Koplik;s spots
lesions of the oral cavity associated with measles
members of what minus-stranded RNA virus family are characterized by a helical nucleocapsid and their ability to induce syncytia during infection?
paramycoviruses
