Chapter 21 Flashcards
R. typhi causes ____
typhus
Chlamydias are obligate extracellular/intracellular?
intracellular
chlamydias are gram ____
negative
Chlamydia trachomatis is most common reportable sexually transmitted disease. It is also found in ___ and ____ systems of children
digestive and respiratory systems
Chlamydia trachomatis can cause lymphogranuloma venereum, which causes the development of swollen ____ ____
lymph nodes
Treponema (pathogen of humans only) is the causitive agent for _____
syphilis
syphilis (from treponema) is what shape of cell?
spirochete
Treponema pallidum pallidum is an obligate _____
parasite
since treponema pallidum pallidum is a parasite, it can not be ____
cultured
Primary syphilis is first stage of untreated syphilis and is usually a small chancre which goes away and is end of the disease for ___/___ (fraction) of cases
1/3
in secondary syphilis, it invades the ____ and results in a widespread ____
bloodstream
rash
latent syphilis has no ____ or ____
signs or symptoms
latent syphiliss could last
30+ years
tertiary syphilis is the most ____
dangerous
Borrelia is a bacilli/spirochete?
spirochete
borrelia burgdorferi causes which disease?
lyme disease
borrelia burgdorferi uses manganese/magnesium instead of iron in proteins?
manganese
borrelia burgdorferi is transmitted to humans via a ____ _____
tick bite
hard ticks of the genus Ixodes is called a vector. t/f?
true
Which stage of ticks life can it become infected?
2nd stage
Which stage do spirochetes multiply in the tick?
3rd stage
Which stage can ticks infect humans?
stage 5
Phase 1 of untreated Lyme disease is marked by a ____ and what syptoms?
red bullseye rash
headaches, stiff neck, muscle/joint pain
phase 2 of untreated lymes disease is marked by ___ symtoms
neurological
Lyme disease more prevalent in the ____ of the US
northeast
Vibrio cholerae has cholera toxin which binds to _____ epethelial celland causes an enzymatic reaction which causes _____
intestinal
diarrhea
Helicobacter pylori causes gastritis and most ___ ____
peptic ulcers
in the formation of peptic ulcers, the bacteria is covered by ____ which causes it to bury into pretective layer of stomach
urease
Vibrios are gram ____
negative
