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MICRO
CH2323
71
Microbiology
Undergraduate 1
07/09/2013

Additional Microbiology Flashcards

 


 

Cards

Term
What is a accidental parasit of humans?
Definition
acanthamoeba
Term
what organisms cause meningoencephalitis?
Definition
naegleria
Term
what is an example of a cilieated pathogen
Definition
balantidium
Term
Once infected with Trypanosoma brucei, the pt cannot ever clear the infection and become immune b/c the parasite?
Definition
changes its glycoprotein surface antigens every time it replicatess
Term
Trypanosoma cruzi is introduced into the body by?
Definition
feces containing trypomastigotes contaminating a bite wound
Term
What form of Leishmania lacks flagella and multiplies in a mammalian host's macrophages?
Definition
amastigotes
Term
What is the same for BOTH Trypanosoma cruzi and Trypanosoma brucei?
Definition
importance of early diagnosis and treatment
Term
what is the most common parasitic disease in industrialized nations?
Definition
Trichomonas infections
Term
The presence of active motile multiflagellated trophozoites in vaginal or urethral secretion is indicative of infection with?
Definition
Trichomonas vaginalis
Term
The protozoans known as apicomplexans?
Definition
reproduce by schizogony and are intracellular parasites
Term
Severe, watery diarrhea, with a "rotten-egg" smell accompanied by abdominal pain, bloating, and fever are signs and symptoms associated with?
Definition
giardiasis
Term
What species of Plasmodium causes cerebral malaria?
Definition
only P. falciparum
Term
What parasitic infections can be diagnosed using a blood smear?
Definition
african sleeping sickness and malaria
Term
what is the prophylactic drug of choice for malaria?
Definition
proguanil
Term
What is TRUE  of Toxoplasma?
Definition

it usually results in no permanent damage and is self-limiting

it is typically contracted by eating undercooked meat

the majority of infected people are asymptomatic

it is one of the worlds most widely distributed protozoan parasite in humans

Term
What parasite is NOT generally microscopic in its mature form, even though microbiologists usually study them?
Definition
helminths
Term
After a trip to several South American countries, a middle-aged man becomes ill. He becomes anemic, loses weight, and runs fever. The clinician notes a recently healed sore near his nose. Microscopic examination of a blood smea does not reveal anyting other than the anemia. What parasitic infection is consistent with this scenaria?
Definition
leishmaniasis
Term
A contact lens wearer and cat owner begins to experience problems with her eye. The eye is inflamed and painful, and examination of the eye reveals that the conjunctiva is ulcerating. Which of the following parasites could be responsible?
Definition
acanthamoeba
Term
The infectious stage of a beef tapeworm in humans is?
Definition
the cysticerci
Term
Differentiation between infection with Taenia saginata and with Taenia solium is carried out by examination of the?
Definition
scoleces
Term
The easiest way to prevent Taenia infection in humans is to?
Definition
thoroughly cook or freeze meat
Term
A human fecal sample is examined and found to contain a few strobila. The person is probably infected with?
Definition
Taenia
Term
a person reorts to a clinic complaining of fever and abdominal pain. The abdomen is swollen, abd blood tests indicate liver damage. A stool sample is examined under a microscope and found to contain eggs wit h a spine projecting from its surfaces. The indications are consistent with infection with?
Definition
Schistosoma mansoni
Term
How are the different types of Schistosoma identified?
Definition
by the position of their spine and the shape of their eggs
Term
What nematodes can be transmitted by mosquitoes?
Definition
Wuchereria bancrofti
Term
What is the most common parasitic worm in the US?
Definition
Enterobius vermicularis
Term
Schistosoma uses?
Definition
snails as an intermediate host
Term
what parasites infect the lymphatic system?
Definition
Wuchereria
Term
Nematodes are known as?
Definition
roundworms
Term
Humans become infected with Fasciola by?
Definition
ingesting the enysted metacercariae on watercress or other vegetation
Term
Elephantiasis is caused by?
Definition
filarial roundworms
Term
what vectors may spend their entire life associated with a single host individual?
Definition
lice
Term
what is the most important vector of human disease?
Definition
mosquitoes
Term
what is transmitted by fecal-oral route?
Definition
Entamoeba histolytica
Term
Whatdo Echinococcus granulosus, Entamoeba histolytica, and Enterobius vermicularis have in common?
Definition
they live in the intestines of their definitive host
Term
Schistosoma causes what?
Definition
snail fever
Term
Balantidium has what?
Definition
cilia
Term
Naegleria is a?
Definition
pseudopodia
Term
Echinococcus causes what?
Definition
hydatid cysts
Term
Giardia causes what?
Definition
beaver fever
Term
Tsetse fly causes what?
Definition
african sleeping sickness
Term
Chagas' disease is caused by what?
Definition
kissing bugs
Term
Sand flies cause what?
Definition
Leishmaniasis
Term
Mosquitoes cause what?
Definition
filariasis
Term
Trichomonas is a?
Definition
STD
Term
T/F Balantidium coli is the only ciliate known to cause disease in man.
Definition
TRUE
Term
T/F contact w/ infected cats and their feces is the only mode of transmission of Toxoplasma to humans.
Definition
FALSE
Term
T/F ALL tapeworms are intestinal parasites that completely lack digestive systems
Definition
true
Term
T/F all flukes are dioecious.
Definition
FALSE
Term
T/F Plasmodium reproduces by binary fission.
Definition
FALSE
Term
T/F Ascariasis is the msot common nematode infection worldwide.
Definition
TRUE
Term
T/F Entamoeba histolytica can cause keratitis if it is introduced through an abrasion in the conjunctiva.
Definition
FALSE
Term
T/F Anemia is common consequence of hookworm infection.
Definition
TRUE
Term
T/F Visceral leishmaniasis is AKA kala-azar and is fatal in 95% of untreated cases.
Definition
TRUE
Term
T/F Most diagnostic techniques are not very sensitive for Cryptosporidium.
Definition
TRUE
Term
the feeding and reproducing stage of many protozoa is known as a ______.
Definition
trophozoite
Term
Acanthamoeba and ___ cause rare and usually fatal infections of the brain
Definition
naegleria
Term
With each wave of replication, ____ changes its glycoprotein surface antigens.
Definition
trypanosoma brucei
Term
the ____ is where immature stages of parasites develop.
Definition
intermediate host
Term
Because beavers are a common zoonotic source of infection with ____, the resulting condition is sometimes referred to as "beaver fever."
Definition
giardia
Term
_____ is an obligately parasitic protozoan that is incapable of surviving long outsidethe human host and is transmitted almost exclusively by sex
Definition
TRICHOMONAS
Term
the mildest type of malaria is caused by?
Definition
plasmodium ovale
Term
because ____ requires Duffy antigens to attach to and infect erythrocytes, Duffy-negative individuals ar eimmune to this parasite.
Definition
plasmodium vivax
Term
Apicomplex reproduce by?
Definition
schizogony
Term
microcephaly can result in a fetus infected transplacentally with____
Definition
toxoplasma gondii
Term
high worm burden with ____ may result in intestinal obstruction
Definition
ascaris lumbricoides
Term
the ____ are helminths with an incomplete digestive system.
Definition
trematodes
Term
the tapeworm's _____ reflects a sequence of development.
Definition
strobila
Term
b/c ____ are readily visible in mean and give it a "mealy" look, inspection of meat can decrease chance of infection with Taenia.
Definition
cysticerci
Term
____ are commonly known as pinworms b/c of the shape of the females tail.
Definition
enterobius vermicularis
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