Micro Chapter 21
Which of the following is true of spirochetes
They are able to penetrate a host's tissues
The emerging disease known as anaplasmosis is transmitted by
Ticks
Which causes piñata, a skin disease primarily in children, in which spirochetes are detectable in specimens from the lesions
Treponema carateum
The STD characterized by 3 distinctly different symptomatic stages is the result of infection with
Treponema pallidum pallidum
T/F: A positive urease test in cultures from gastric secretions is definite identification of helicobacter pylori
True
T/F: All stages of lodes, the vector for Lyme disease, may feed humans.
True
T/F: Campylobacter gastroenteritis is usually caused by ingestion of contained poultry
True
T/F: The cholera toxin is a potent exotoxin composed of 5 identical B subunits and one A subunit.
True
T/F: chlamydophila pneumoniae is suspected of causing arteriosclerosis
True
Leptospirosis interrogates exits the body in _____
Urine
A gastroenteritis which usually resolves in72 hours in contracted from eating shellfish contaminated with
Vibrio parahaemolyticus
Would contaminated with vibrio _____ can lead to potentially fatal septicemia
Vulnificus
The normal habitat for vibrio cholerae is ____
Water
Parrot fever, caused by ______, is usually pneumonia- like disease but can sometimes lead to hepatitis or endocarditis
Chlamydophila psittaci
Which intercellular parasite of humans causes mild pneumonia
Chlomy pneumoniae
Major pandemics of severe diarrheal disease have been caused by vibrio _____ for centuries
Cholerae
What characteristic does vibrio share with salmonella
Both have 0 polysaccharide antigens
Treponema pallidum can be transmitted by
Both through sexual intercourse and from an infected mother to unborn child
Epidemic typhus recur many years after an initial episode; the recurrent disease is called
Brill-Zinsser disease
STD chlamydia is similar to infection with Yersinia pest is in that they both can produce
Buboes
Among adults chlamydia trachomatis is an STD, but among kids it can cause ocular infections which may spread
By fecal contamination or respiratory droplets
T/F: An expanding rash that resembles a bull's-eye is characteristic of secondary syphilis
False
T/F: Vibrio vulnificus causes septicemia that is self limiting but rarely fatal
False
T/F: humans are the only hosts of rickettsia rickettsii
False
T/F: small doses of antimicrobial agents are very effective in treating the late stages of borrelia infection because most of the symptoms result from immune responses
False
T/F:All of the rickettsias are zoonoses
False
The characteristic lesion for tertiary syphillis is the presence of _______ in bones, nervous tissue and the skin
Gummas
Gastritis from infection of the stomach wall with _____ can cause inflammation leading to peptic ulcers
Helicobacter pylori
Rickettsia prowazekii is transmitted by
Human body louse pedicures humanus
Which of the following disease is considered an emerging disease since 1987
Human monocytes ehrlichiosis
Endoscopes filled with multiplying chlamydia are know as
Inclusion bodies
Rickettsiosis is caused by a pathogen that
Infects the lining of blood vessels and leads to leaking of plasma into tissue
The S/S of infection with helicobacter pylori are the result of
Invasion by H.Pylori into the mucosa of the stomach
The S/S of infection with helicobacter pylori are a result of
Invasion of H. Pylori into the mucosa of the stomach
Which of the following statements of trachoma is false
It is most often a disease of adults who suffer from chlamydia
Which about ehrilichia is false
It usually causes a spotted rash similar to Rocky Mountain spotted fever
What characteristic of borrelia burgdorferi makes it an usual bacterium
It utilizes manganese instead of iron in its proteins and enzymes
The most important virulence factor of vibrio cholera is
It's ability to produce a potent exotoxin
Which statement concerning the causative agent syphilis is true
Large helically coiled bacterium motile by means of endoflagella
Which of the following is a zoonosis caused by a spirochete
Leptospirosis
The rash characteristic of RMSF starts on the _____
Limbs
Shortly after travel, young man experiences fever, chills, muscle aches, and headache. Kid had large backpack and saying in hostels. What does he have?
Louse-borne relapsing fever
Borrelia burgdorferi is an unusual bacterium that lacks iron- containing enzymes and proteins and causes _____ disease in humans
Lyme
Which of the following are referred to as energy parasites
Chlamydias
Transovarian tranmission is a process in which
An infected female vector transmits the pathogen to the eggs forming in its ovaries.
Infection with _____ produces symptoms similar to RMSF, except for rash
Anaplasma phagocytophilium
Young woman, recently hiking and found tick on her torso has a fever that came on suddenly. No rash but leukopenia. What disease
Anaplasmosis
A nonveneral treponema disease transmitted by contaminated eating utinsils and primary affects African kids
Bejel
Patient with frequent diarrhea with ab pain and fever for several days. Allergy to shellfish. Blood in feces. Gram positive, curved, motile, urease-negative bacteria.
Campylobacter jejuni
The bacterium _______ is a common cause of bacterial gastroenteritis contracted from contaminated food, especially in poultry
Campylobacter jejuni
The STD invasive form of chlamydia
Caused by the LGV strain of Chlamydia trachomatis
Intracellular parasite of humans that usually causes a mild pneumonia
Chalmydolphil pneumoniae
In the mother has ______ at the time of birth, it will effect the kids eyes
Chlamydia
The intracellular parasite _____ can infect mucous membranes in various organ systems
Chlamydia trachomatis
Which pair is mismatched?
Chlamydia trachomatis: pneumonia
The Ixodes tick can become infected with borrelia burgdorferi
Either as a a large or lymph
The infectious form of chlamydia is the _____ body
Elementary
Which of the following pairs is mitmatched
Elementary bodies: dormant noninfectious form
Sequence for stages of ehrlichia developed in infected host
Elementary body, initial body, morula
The reservoir for orientia tsutsugamushi is _____
Mites
Scrub typhus is transmitted to humans by mites infected with ______
Orientia
Red mites (chiggers) spread _____ among both humans and rodents.
Orientia tsutsugamushi
A disease that birds carry that can be given to humans is
Ornithosis
Typical lesion of syphilis is
Painless reddened lesion called a chancre
Rickettsia ____ is fatal to its vector within 2-3 weeks
Prowazekii
Pair rickettsial pathogen and vector
R. Prowazeki: louse
Louse-Borne relapsing fever is caused by a spirochete known as borrelia ______,
Recurrentis
Epidemic typhus, spread by lice, caused by
Rickettsia prowazekii
Leptospirosis interrogates gets its name from
The fact that one end of spirochete is curbed like a question mark