Test 1 Possible Questions Flashcards

1
Q

Most important factor in distribution of parasitic infection in industrialized nations is?

A
Plane travel
(also, rapid traveling and High number of immunodeficient people)
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2
Q

Plasmodium reproduces via sexual or asexual?

A

Both asexual in humans and sexual in mosquito

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3
Q

The entamoeba histolytica infection can be prevented and ocontrolled by the _____?

A

Water Treatment & Food sanitation

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4
Q

Nagelaria fowleri that normally infect _______ can accidently infect human and cause primary acute meningoencephalitis.

A

Ducks and Geese

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5
Q

Naeglaria fowleri infection in human begins with entrance of parasite to _____ by _____.

A

Nasal passage, Diving and swimming

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6
Q

Trichomonas vaginalis is transmitted by ?

A

Sexual intercourse

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7
Q

A flagellated protozoa that inhabit the atria of human and causes sexually transmitted disease.

A

Trichomonas vaginalis

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8
Q

An amoeba that is normally found among ducks, geese, and swans. It is an accidental parasite of humans and may cause primary acute meningocephalitis.

A

Naeglaria Fowleri

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9
Q

The 3rd most common round worm in the USA is:

A

Whipworm (trichuris trichuria)

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10
Q

The 2nd most common round worm in the USA is:

A

Ascaris (longest)

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11
Q

The MOST common round worm in the USA is:

A

Pinworm (enterobus)

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12
Q

An intestinal flagellate with no observable flagella that uses pseudopodia for movement and causes diarrhea in humans:

A

Dientamoeba Fragilla

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13
Q

Dientamoeba fragilis, an intestinal parasite that uses _____ for movement and causes diarrhea in humans.

A

Pseudopodia

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14
Q

Giardia is not highly invasive; the target tissue is the:

A

Intestine

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15
Q

This vector is able to transmit Kala- azar disease to humans.

A

Sand fly

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16
Q

Diagnosis of malaria is achieved through direct identification of plasmodia in a?

A

Blood smear

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17
Q

The number of worms in the intestinal tract is the:

A

Worm burden

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18
Q

Common name for anisakidae marina is:

A

Herring worm

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19
Q

The parasitic organism most commonly associated with waterborne outbreaks of diarrhea in GA?

A

Cryptosporidium Parvum

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20
Q

A blood parasite that invades all red blood cells and is known as the deadliest plasmodium.

A

Plasmodium Falciparum

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21
Q

The definitive (final) host for toxoplasma gondii is?

A

Domestic Cat

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22
Q

Increase in worm burden in the intestinal tract will happen by?

A

Reinfestation

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23
Q

A blood parasite that invades reticulocytes is characterized by simple ring forms may cause a rue relapse is:

A

Plasmodium vivax

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24
Q

Since infection with toxoplasmosis during pregnancy may cause embryonic or fetal damage, pregnant woman should avoid contact with?

A

Cat feces

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25
Q

The final host for plasmodium malariae is?

A

Female anopheles Mosquito

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26
Q

The most common intestinal flagellated protozoa isolated from clinical specimens in the USA is?

A

Giardia lamblia

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27
Q

Source of transmission of Giardia Lamblia?

A

Contaminated food & contaminated water

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28
Q

When the parasite live on the host and its life cycle will not be completed there:

A

Infestation

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29
Q

Host that parasite passes its adult and sexual reproduction:

A

Definitive host

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30
Q

Transport parasite from infected host to non-infected host:

A

Arthropoda

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31
Q

An animal that harbors a species of parasite and can serve as a source of parasitic infections:

A

Reservoir

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32
Q

Hosts that parasite passes its larvae and asexual reproduction:

A

Intermediate host

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33
Q

Diagnosis of filariasis is difficult because symptoms are broad- spectrum, but with the identification of microfiliaria and examining _____ diagnosis is possible.

A

Presence or absence of sheath Array of stained nuclei on the tail

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34
Q

Trichinella spiralis larvae can be encysted in striated muscle of mammal, and can be transmitted to human by?

A

Undercooked meat

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35
Q

The eggs of this intestinal roundworm do not require incubation in warm humid soil for its infectivity:

A

Pinworm

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36
Q

Anisakidae marina worm infections is very common in?

A

Japan

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37
Q

Plasmodium vivax causes mild hemolytic anemia because of invasion of?

A

Immature red blood cells

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38
Q

Which one of the following is the most likely way to get infected by Giardia lamblia?

A

Ingestion of cyst

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39
Q

A unique feature of sporozoan is that they?

A

Have a complex method of reproduction including asexual, and sexual.

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40
Q

Which of the following genera causes vaginitis

A

Trichomonas

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41
Q

Which of the following statements describe protozoan?

A

They are Eukarotes

They can be grouped on the base of motility

42
Q

Important factors involved in the severity of parasitic infection:

A
Virulence
Innoculation size 
Normal flora 
Host resistant 
(all of the above)
43
Q

Major locomotion of sarcodinia?

A

Pseudopodia

44
Q

Transports parasite from infective to non-infected.

A

V ector

45
Q

Host organism in which parasite passes to adult and/or sexual reproduction phase.

A

Definitive of final host

46
Q

Invasion and multiplication of pathogenic parasite into the body.

A

Infection

47
Q

Host that parasite passes its larvae and asexually reproduces.

A

Intermediate host

48
Q

The severity of parasitic infection is related to?

A

State of resistance (most important)

49
Q

Pear shaped trophozoite of of sporozoa characterized by many ring forms in RBC.

A

Babesia Mincroti (thick, 2-4 rings)

50
Q

Prolonged heavy infection of Giardia Lamblia results in?

A

Fat in stools

51
Q

Symptoms of malaria that repeats episodically:

A

Headaches

52
Q

Most round worms are found in?

A

Human intestines (but answer is none of the above)

53
Q

Why is host immune response to parasites sometimes ineffective?

A

Having capsule or slime layer Complex life cycle of parasite Conversion of antigen on the parasite surface
All of the above

54
Q

Most sporozoa are pathogens.

A

True

55
Q

Person may acquire toxoplasmosis ONLY from cysts.

A

True

56
Q

Blood flagella are transmitted by vectors.!(example TseTse fly)

A

True

57
Q

Upon infection with Naeglaria fowleri, clinical symptoms are very similar to
common cold.

A

True

58
Q

Most of the adult helminth worms are large, can be seen without microscope.

A

True

59
Q

Amoeba reproduce asexually ONLY.

A

True

60
Q

An oocyst is the result of asexual reproduction in plasmodium

A

True

61
Q

A person may acquire toxoplasmosis from eating improperly cooked meat.

A

True

62
Q

Threadworm is the only worm to reproduce inside the human.

And the only female adult form inside the human.

A

True

63
Q

A male anopheles mosquito is a final host for plasmodium vivax.

A

True

64
Q

Prolonged heavy infection of Giardia lambiia may result in malabsorption which result that stool contains large amounts of unabsorbed fat of intestinal mucosa.

A

True

65
Q

. Round worms are the MOST prevalent helmenth worm infection around the world.

A

True

66
Q

Larval form of parasite can be destroyed by antibodies, and the presence of these antibodies provide resistance to reinfection by parasite

A

True

67
Q

Trichinella spiralis

A

Trichinosis Undercooked pork Undercooked bear Focal lesion

68
Q

T. Saginata

A

Beef tapeworm infection Cysticercus

69
Q

T. Solium

A

Pork Tapeworm
Eggs
cysticercosis

70
Q

E. histolytica can be prevented and controlled by

A

water treatment

71
Q

A patient complains of diarrhea and crump after returning from a rafting trip in Canada. he said he was drinking water from streams. Which flagellate protozoa is he most likely infected by?

A

Giardia Lambelia

72
Q

This vector is able to transmit River blindness disease to humans, and their breeding sites are overhanging vegetation sites

A

Black fly (simulium fly)

73
Q

An ameba that is normally found among ______ and its is an accidental parasite of humans and may cause primary acute meningocephalitis:

A

Duck and Geese

74
Q

An intestinal protozoa with no observable flagella which use pseudopodia for its movement and causes diarrhea in humans

A

Dientamoeba fragilis

75
Q

Which one of the following is/are NOT IMPORTANT factors in distribution of parasitic infection in industrial society

A

high number of healthy people

76
Q

Which of these are IMPORTANT in distribution of parasitic infection in industrial society

A

rapid travel

high number of immunodeficient people

77
Q

Why is th host immune response to parasitic infection sometimes ineffective

A

large size of parasite

complex life cycle of parasite

78
Q

Important factors involved in severity of parasitic infection are

A

Virulence of parasite
State of immunity of host
Size of inoculation

79
Q

Major locomotor in Sporozoan is

A

Movement is not a prominent characteristic in most cells, but occasionally flagella or pseudopoda are present.

None of the Above

80
Q

An intestinal ciliate which can form cyst and causes diarrhea in humans

A

Balantidium Coli (An intestinal ciliate):

81
Q

A hemoflagellate parasite that can be transmitted to human by Assassin bug bite

A

trypanosoma

crozi

82
Q

trypanosoma

crozi

A

‘Assassin bug’ because when it infects a person with trypanosoma
crozi that person contracts Chaga’ s disease and usually dies

83
Q

a hemoflagellate parasite that can live and multiply in the blood and tissues of humans

A

trypanosomes cruzi

84
Q

Reduvvid bug is able to transmit ______ diseases to humans by biting the mucus membrane of peripheral area of the lips, filling the area with blood, and then filling he bites with feces containing trypanosome

A

Chaga’s

85
Q

Reduviid Bug

A

Kissing Bug, Assassin Bug

86
Q

T/F

Intestinal flagellates are all transmitted by vectors

A

False

87
Q

T/F A sporosite is the result of fertilization in sporozoans

A

True

88
Q

T/F

A person may acquire toxoplasmosis form cat scratch

A

False

Litter box

89
Q

A round shaped trophozoite of a sporozoan characterized by the presence of single ring forms in red blood cells and crescent shaped gametocyte is:

A

plasmodium falciparum

90
Q

A blood parasite that invades all age’s blood cells and is characterized by single ring form

A

Plasmodium

91
Q

Where do undeveloped eggs of whip worm complete their development?

A

In the human intestine

92
Q

Which on of the following worm form fine filariform larvae

A

Hookworm

93
Q

How does the hook worm inject the human body

A

cut on bare foot

hair follicle??? also???

94
Q

Number of worms in the intestinal tract is the

A

worm burden/load

95
Q

Common Name for ancylostoma braziliense is

A

Dog and Cat Hookworm

96
Q

The parasitic organism most commonly associated with waterborne outbreaks of diarrhea in Georgia

A

Cryptosporidium parvum

97
Q

largest adult intestinal round worm

A

Ascaris lumbricoides (Ascariasis)

98
Q

Trichinella spiralis is an intestinal worm that humans are accidental host, transmission of worm occurs by:

A

eating undercooked pork or bear

99
Q

Since infection with toxoplasmosis during pregnancy may cause embryonic or fetal damage, pregnant women should avoid contact with

A

cat feces

100
Q

The intermediate host for Plasmodium malaria is

A

Human

101
Q

Infection with Enterobius vermicularis is best diagnosed by?

A

Examination of cellophane tape preparation for eggs