Parasitology Test

Front 1

yeast cells may be confused with

Back 1

protozoan cysts

Front 2

pollen grains may be confused with

Back 2

helminth eggs

Front 3

starch granules may be confused with

Back 3

protozoan cysts

Front 4

plant hairs may be confused with

Back 4

nematode larva

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ploymorphonuclear leukocytes may be confused with

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amoebic cysts

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malarial rings form within

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red blood cells

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trichinella spiralis

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encysted larva

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Ascaris lumbricoides

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nematode

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Fasciolopsis buski

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trematode

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Taenia saginata

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cestode

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aschelminthes

Back 11

the phylum containing nematodes

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apicomplexa

Back 12

the phylum containing coccidia, including Cryptosporidium

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chromatin

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genetic material in the nucleus

Front 14

chromatoid bodies

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rod-shaped masses of RNA in amoeba

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cilia

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short organelles of locomotion on protozoa

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ciliophora

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the phylum containing ciliates

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commensal

Back 17

nonpathogenic parasites

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cysts

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the dormant form of a protozoan

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definitive host

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the host in which the parasite reaches maturity

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endemic

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the presence of a parasite at all times

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flagella

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whiplike appendages on protozoa

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hermaphroditic

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having both male and femal reproductive structures

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intermediate host

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the host in which the immature parasite resides

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karyosome

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a small mass of chromatin in protozoan nuclei

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mastigophora

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flagellates

Front 26

microspora

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tiny intracellular parasites, mostly found in AIDs patients

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miracidium

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a trematode larva

Front 28

oncosphere

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a six-hooked cestode larva

Front 29

parasite

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a living organism living in or on another organism

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pseudopods

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amoebic organelles of locomotion

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playthelminths

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the phylum containing flatworms

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sarcodina

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amoeba

Front 33

sarcomastigophora

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the phylum containing amoeba and flagellates

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trophozoites

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the actively multiplying form of a protozoan

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non pathogenic parasites are called

Back 35

commensals

Front 36

the nematodes are in the phylum

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aschelminths

Front 37

a six-hooked cestode larva is known as an

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oncosphere

Front 38

whiplike appendages used for locomotion are called

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flagella

Front 39

rod-shaped masses of RNA in amoeba are called

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chromatoid bodies

Front 40

nematodes are in the class

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nematoda

Front 41

tiny intracellular parasites are found in the phylum

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microspora

Front 42

a tapeworm attaches by means of a

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scolex

Front 43

flukes are found in the class

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trematoda

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the motile, actively feeding forms of protozoa are called

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trophozoites

Front 45

an ______ ______ is used to determine the size of protozoan cysts

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ocular mircometer

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babesiosis is diagnosed by examining

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blood scan

Front 47

helminthic infection is usually diagnosed by dection of characteristic _____

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ovas

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a mammillated outer covering is characteristic of _____ eggs

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ascaris

Front 49

trematode eggs may contain an embryo known as a

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miracidium

Front 50

the larvae of Strongyloides stercoralis may be confused with those of

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hookworm

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_____ or filariae may be seen in blood or skin

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microphiliar

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striated _____ _____ may be confused with Taenia eggs

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pollen grains

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_____ _____ may be confused with nematode larva

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plant hair

Front 54

all amoeba contain peripheral nuclear chromatin

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false

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Cryptosporidium is a blood and tissue protozoan

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false

Front 56

watery stool specimens are apt to contain protozoan trophozoites

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true

Front 57

hookworm eggs are striated

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true

Front 58

amoebae are found in the phylum Sarcomastigophora

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true

Front 59

flukes and tapeworms are considered to be flatworms

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true

Front 60

most flatworms are hermaphroditic

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true

Front 61

tapeworms are found in the class Trematoda

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false

Front 62

flukes consist of segments called proglottids

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false

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cestodes usually have complicated life cycles

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true

Front 64

protozoan cysts usually predominate in solid or formed stool specimens

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true

Front 65

most amoebic trophozoites contain 4 nuclei

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false

Front 66

blood protozoans may be identified by the examination of thick or thin smears

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true

Front 67

chromatoid bodies may been seen in amoebic trophozoites

Back 67

false

Front 68

thick blood smears provide more typical morphological features of parasites than thin blood smears

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false

Front 69

toxoplasmosis is usually diagnosed by the examination of fecal smears

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false

Front 70

adult nematodes are rarely found in fecal smears

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true

Front 71

infertile helminth eggs may have shapes different from fertile eggs

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true

Front 72

the egg shell of Enterobius is thin

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false

Front 73

most trematode eggs are operculate

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false

Front 74

the larvae of which nematode is often found in feces

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Strongyloides stercoralis

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Helminths are found in the phylum _____

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aschelminthes

Front 76

amoebae move by means of

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pseudopods

Front 77

free-living amoebae include

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Naegleria species

Front 78

coccidia include all but _____

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mircosporidia

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tapeworms are found in the phylum _____

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platyhelminthes

Front 80

Entamoeba histolytica is classified in the phylum _____

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sarcomastigophora

Front 81

which protozoan trophozoite often contains 2 nuclei

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Dientamoeba fragilis

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the acid-fast technique may be used to identify all but _____

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Entamoeba histolytica

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which characteristic is not useful in identification of helminth eggs

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motility

Front 84

the eggs of which nematode are characteristically thin

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Ancylostoma

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a cestode egg may contain a larva known as a _____

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oncosphere

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filarial nematodes are usually diagnosed by _____

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examination of blood smears

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parasites which cause particularly severe disease in immunocompromised hosts include all but _____

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Enterobius vermicularis

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protozoans are found in all phyla except

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Aschelminthes

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malaria is caused by protozoans in the genus _____

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Plasmodium

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the phylum Microspora includes all genera except

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Cryptosporidium

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roundworms are found in the class

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nematoda

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tissue-dwelling nematodes include all except

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Strongyloides

Front 93

leaf-shaped helminths are called

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flukes