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Flashcards in Test 1 Possible Questions Deck (101):
1

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

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

2

Plasmodium reproduces via sexual or asexual?

Both asexual in humans and sexual in mosquito

3

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

Water Treatment & Food sanitation

4

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

Ducks and Geese

5

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

Nasal passage, Diving and swimming

6

Trichomonas vaginalis is transmitted by ?

Sexual intercourse

7

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

Trichomonas vaginalis

8

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

Naeglaria Fowleri

9

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

Whipworm (trichuris trichuria)

10

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

Ascaris (longest)

11

The MOST common round worm in the USA is:

Pinworm (enterobus)

12

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

Dientamoeba Fragilla

13

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

Pseudopodia

14

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

Intestine

15

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

Sand fly

16

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

Blood smear

17

The number of worms in the intestinal tract is the:

Worm burden

18

Common name for anisakidae marina is:

Herring worm

19

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

Cryptosporidium Parvum

20

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

Plasmodium Falciparum

21

The definitive (final) host for toxoplasma gondii is?

Domestic Cat

22

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

Reinfestation

23

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

Plasmodium vivax

24

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

Cat feces

25

The final host for plasmodium malariae is?

Female anopheles Mosquito

26

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

Giardia lamblia

27

Source of transmission of Giardia Lamblia?

Contaminated food & contaminated water

28

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

Infestation

29

Host that parasite passes its adult and sexual reproduction:

Definitive host

30

Transport parasite from infected host to non-infected host:

Arthropoda

31

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

Reservoir

32

Hosts that parasite passes its larvae and asexual reproduction:

Intermediate host

33

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

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

34

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

Undercooked meat

35

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

Pinworm

36

Anisakidae marina worm infections is very common in?

Japan

37

Plasmodium vivax causes mild hemolytic anemia because of invasion of?

Immature red blood cells

38

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

Ingestion of cyst

39

A unique feature of sporozoan is that they?

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

40

Which of the following genera causes vaginitis

Trichomonas

41

Which of the following statements describe protozoan?

They are Eukarotes
They can be grouped on the base of motility

42

Important factors involved in the severity of parasitic infection:

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

43

Major locomotion of sarcodinia?

Pseudopodia

44

Transports parasite from infective to non-infected.

V ector

45

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

Definitive of final host

46

Invasion and multiplication of pathogenic parasite into the body.

Infection

47

Host that parasite passes its larvae and asexually reproduces.

Intermediate host

48

The severity of parasitic infection is related to?

State of resistance (most important)

49

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

Babesia Mincroti (thick, 2-4 rings)

50

Prolonged heavy infection of Giardia Lamblia results in?

Fat in stools

51

Symptoms of malaria that repeats episodically:

Headaches

52

Most round worms are found in?

Human intestines (but answer is none of the above)

53

Why is host immune response to parasites sometimes ineffective?

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

54

Most sporozoa are pathogens.

True

55

Person may acquire toxoplasmosis ONLY from cysts.

True

56

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

True

57

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

True

58

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

True

59

Amoeba reproduce asexually ONLY.

True

60

An oocyst is the result of asexual reproduction in plasmodium

True

61

A person may acquire toxoplasmosis from eating improperly cooked meat.

True

62

Threadworm is the only worm to reproduce inside the human.
And the only female adult form inside the human.

True

63

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

True

64

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

True

65

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

True

66

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

True

67

Trichinella spiralis

Trichinosis Undercooked pork Undercooked bear Focal lesion

68

T. Saginata

Beef tapeworm infection Cysticercus

69

T. Solium

Pork Tapeworm
Eggs
cysticercosis

70

E. histolytica can be prevented and controlled by

water treatment

71

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?

Giardia Lambelia

72

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

Black fly (simulium fly)

73

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

Duck and Geese

74

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

Dientamoeba fragilis

75

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

high number of healthy people

76

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

rapid travel
high number of immunodeficient people

77

Why is th host immune response to parasitic infection sometimes ineffective

large size of parasite
complex life cycle of parasite

78

Important factors involved in severity of parasitic infection are

Virulence of parasite
State of immunity of host
Size of inoculation

79

Major locomotor in Sporozoan is

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

None of the Above

80

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

Balantidium Coli (An intestinal ciliate):

81

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

trypanosoma
crozi

82

trypanosoma
crozi

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

83

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

trypanosomes cruzi

84

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

Chaga's

85

Reduviid Bug

Kissing Bug, Assassin Bug

86

T/F
Intestinal flagellates are all transmitted by vectors

False

87

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

True

88

T/F
A person may acquire toxoplasmosis form cat scratch

False

Litter box

89

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

plasmodium falciparum

90

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

Plasmodium

91

Where do undeveloped eggs of whip worm complete their development?

In the human intestine

92

Which on of the following worm form fine filariform larvae

Hookworm

93

How does the hook worm inject the human body

cut on bare foot
hair follicle??? also???

94

Number of worms in the intestinal tract is the

worm burden/load

95

Common Name for ancylostoma braziliense is

Dog and Cat Hookworm

96

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

Cryptosporidium parvum

97

largest adult intestinal round worm

Ascaris lumbricoides (Ascariasis)

98

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

eating undercooked pork or bear

99

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

cat feces

100

The intermediate host for Plasmodium malaria is

Human

101

Infection with Enterobius vermicularis is best diagnosed by?

Examination of cellophane tape preparation for eggs