Parasitology Y3 60 QCM

1. What is Infective form of Giardia lamblia?
Precyst
Mature cyst
Uninucleate cyst
Binucleate cyst
Quadrinucleate cyst
2. The sporulated oocyst containing 8 sporozoites is the infective stage of Isospora belli. Infection is usually asymptomatic. Clinical illness includes but EXCEPT?
Abdominal discomfort
Mild fever
Diarrhea
Melabsorption
Mental disorder
3. What is the infective stage of Isospora belli?
4 cresent-shaped sporozoites
Merozoites
Sporocysts
Sporulated oocyst containing 8 sporozoites
Sporoblasts
4. T. Gondii occurs in 3 forms: Trophozoite Tissue cyst and Oocyst. What is definitive host of T. gondii?
Swine
Cow
Cats and other felines
Human
Dog
5. Trichomonas vaginalis was first observed by Donne in vaginal secretion. In females, it lives in ...?
Vagina and cevix
Small intestine
Large intestine
Mucous membrane
Skin
6. In AIDS patients and immunocompromised subjects, Cryptosporidium has assumed great importance as a frequent cause of ?
Low grade fever
Intractable diarrhea
Migraine
Acute abdominal pain
Gastritis
7. Two species of cryptosporidium, mostly cause human infections: c. Hominis and c. parvum. The infective form of the parasite is?
Protozoa
Sporozoites
Sporulated oocysts
Merozoite
Gemetocyte
8. The reservoirs of cryptosporidium are?
Man, cattle, cat, and dog
Dog and swine
Pig and cat
Animals
Fish and crabs
9. Microsporidia consisted of 9 genera and 13 species are associated with human disease, particularly in..............?
Healthies people
Abdominal pain
Infective animals
HIV infected and other immunocompromised subjects
Cancer risk
10.Pneumocystis jirovecii (carinii) is a yeast-like fungus of the genus pneumocystis. It is the causative organism of ?
Acute meningitis
Pneumocystic pneumonia
Acute diarrhea
Pharyngitis
Bronchiolitis
11.What is the infective form of the Pneumocystis jirovecii?
Sporozoites
Cyst
Trophozoites
Daughter trophozoites
Precyst
12.Pneumocystis jirovecii (carinii) is normally a commensal in the lung and spreads by respiratory droplets. Clinical presents with .........?
Non-productive cough, dyspnea, and high fever
Diarrhea
Nausea and vomit
Abdominal pain
Shortness of breath
13.Which method that can not diagnosis Pneumocystis jirovecii pneumonia?
Microscopy
Lung biopsy
Serodiagnosis
Molecular diagnosis
Blood smear
14.Which one is NOT correct for B. Coli cyst ?
The cyst is spherical in shape and measures 40–60 μm in diameter
It is surrounded by a thick and transparent double-layered wall
The cytoplasm is granular. Macronucleus, micro nucleus, and vacuoles are also present in the cyst.
The trophozoites is the infective stage of B. coli
It is found in chronic cases and carriers
What is infective form of B. coli ?
Cyst
Trophozoites
Precyst
Merozoite
Sporozoite
16.What is optimum host of Trichinella ?
Cat
Dog
Cattle
Horse
Pig
17.What is Alternate host of Trichinella ?
Man
Dog
Cattle
Horse
Pig
18.Trichinella spiralis, tissue nematode. The major source of human infection was shown to be the consumption of inadequately cooked pork. It is the causative agent of .......?
Trypanosomiasis
Trichinosis
Amoebiasis
Trichuris
Gastritis
19.The adult worms are found attached to the wall of the caecum and less commonly to the vermiform appendix, colon, and anal canal. Trichuriasis can be prevented but EXCEPT?
Proper disposal of feces
Avoiding consumption of unwashed fruits
Avoiding consumption of unwashed vegetables
Treatment of infected persons
Vaccination
20.Which drug for treatment of Trichuriasis?
Mebendazole (100 mg 12 hourly for 3–5 days)
Cefixime (200 mg q 12 hour for 7 days)
Ciprofloxacin (500mg q 12 oral for 7 days)
Amocycillin (500 mg oral for 7 days)
Metronidazole (500 mg oral for 7 day)
21.Trichostrongylus, a parasite of sheep and goats, seen in Africa and Asia, may cause human infection, which is usually asymptomatic. The adult worm is found in ......?
The colon
The rectum
The small intestine duodenum and jejunum of man.
The cecum
Large intestine
22.Which is Infective form of Strongyloides stecoralis?
Filariform larva
rhabditiform
Mature cyst
Precyst
Trophozoites
23.Which one is characteristic of Filariform larva ?
Eggs are conspicuous within the uterus of gravid female
Each uterus contains 8–10 eggs arranged anteroposteriorly in a single row
Oval: measure 50–60 μm in length and 30– 35 μm in breadth
They hatch out to rhabditiform larva. It is the larva and not the egg, which is excreted in feces and detected on stool examination and not egg
It is the infective stage of the parasite to man.
24.The adult worms of Ancylostoma duodenale live in the.............. Of infected persons mostly in the jejunum, less often in the duodenum, and infrequently in the ileum. Please choose the correct one
Small intestine
Large intestine
Transverse colon
Sigmoid colon
Rectum
25.Which one is NOT characteristics of Ancylostoma duodenale?
Humans are the only natural host
No intermediate host is required like other helminths
Third stage filariform larva is infective form
The female worm lays eggs
Eggs freshly passed in feces are infective for humans
26.Ascaris lumbricoides has been observed and described from very ancient times, when it was sometimes confused with the earthworm. Please choose the correct one:
Adult worms live in the small intestines 85% in jejunum and 15% in ileum
Adult worms live in the small intestines
Adult worms live in liver
Adult worms live in stomach
Adult worms live in colon
27.Ascaris lumbricoides Infection occurs when the egg containing the infective rhabditiform larva is swallowed. Which is Infective form ?
Female worm
Male worm
Embryonated eggs
Adult Worm
Mature cyst
28.Ascaris lumbricoides Infection occurs when the egg containing the infective rhabditiform larva is swallowed. Which is Natural host ?
Dog
Man
Cat
Swine
Fish
29.Most Toxocara infections are asymptomatic, but in some, particularly in young children, visceral larva migrans develops, characterized by but EXCEPT one ?
Fever
Hepatomegaly
Cough and pulmonary infiltrates
High eosinophilia, and hyperglobulinemia
Acute diarrhea
30.Parasites are living organisms, which depend on a living host for their nourishment and survival. They multiply or undergo development in the host. Parasite is usually applied to Protozoa: unicellular organisms and....?
Helminths: multicellular organisms
Amoebae
Flagellates
Sporozoa
Ciliates
31.Endoparasite parasite is the parasite that lives within the body of the host and is said to cause an infection. Endoparasites can further be classified as below but EXCEPT?
Obligate parasite
Facultative parasite
Accidental parasites
Aberrant parasites
Free-living parasite
32.Direct life cycle when a parasite requires only single host to complete its development. Which parasites having direct life cycle?
Entamoeba histolytica
Malarial
Toxoplasma gondii
Coccidia
Babesia
33.These tests are basically of 2 types is tests for antigen detection and tests for antibody detection. Antibody detection procedures are useful in detecting various parasitic infection like amoebiasis, echinococcosis, and leishmaniasis in man. Which test is CAN NOT detect antibody?
ELISA test
Indirect hemagglutination
Indirect immunofluroscent antibody test
Rapid immunochromatography test
Polymerase chain reaction
34.single parasite divides either longitudinally or transversally into two or more equal number of parasites. Mitotic division of nucleus is followed by division of the cytoplasm. In amoebae, division occurs along any plane, but in flagellates, division is along longitudinal axis and in ciliates, in the transverse plane. Which is reproduction process?
Multiple fission
Schizogony
Endodyogeny
Binary fission
Syngamy
35.Protozoan parasites of medical importance have been classified into kingdom Protista, subkingdom Protozoa which is further divided into the following four phyla: EXCEPT?
Sarcoma stigophora
Apicomplexa
Bacteroidetes
Microspora
Ciliophora
36.The cytoplasm of amoeba is bounded by a membrane and can be differentiated into .....?
Outer ectoplasm and inner endoplasm
Ectoderm and endoderm
Outer ectoplasm
Inner endoplasm
Ectocytoplasm
37.A few of the free-living amoebae occasionally act as human pathogens producing meningoencephalitis and other infections. The parasitic amoebae inhabit .....?
Production cells
Skin laceration
The alimentary canal
Parasite growth
Host reproduction
38.Amoebae are classified as either free-living or intestinal amoebae. Which one is NOT Intestinal amoebae?
Entamoeba histolytica
Entamoeba coli
Entamoeba hartmanni
Entamoeba dispar
Naegleria fowleri
39.E. Histolytica occurs in 3 forms such as?
Trophozoite, Precyst, and Cyst
Trophozoite, Precyst, and endocyst
Trophozoite, uninucleate cyst, and Quadrinucleate cyst
Precyst, uninucleate cyst, and Quadrinucleate cyst
Precyst, uninucleate cyst, and Binucleate cyst
40.Trophozoite of Entamoeba histolytica is the vegetative or growing stage of the parasite. The trophozoites from acute dysenteric stools often contain ......?
Cytoplasm
Phagocytosed erythrocytes
White blood cells
Polynucleus neutrophil
Basophil
41.Inner endoplasm of Entamoeba histolytica is finely granular, having a ground glass appearance. Which is NOT endoplasm contains ?
Nucleus
Food vacuoles
Erythrocytes
occasionally leucocytes
Cell wall
42.Entamoeba histolytica causes intestinal and extraintestinal amoebiasis. E. Histolytica passes its life cycle ....?
1 host-man
1 host-animal
2 hosts-animal and man
3 hosts-animal, fish and man
4 hosts-animal, fish, plane and man
43.Entamoeba histolytica causes intestinal and extraintestinal amoebiasis. Which one is NOT extraintestinal amoebiasis?
Amoebic hepatitis
Amoebic liver abscess
Fulminant colitis
Amoebic appendicitis
Pulmonary amoebiasis
44.Diagnosis of Intestinal Amoebiasis: The stool should be collected into a wide mouth container and examined without delay and which examination should be done first?
Macroscopic and Microscopic examinaton
Serodiagnosis
Indirect hemagglutination
Latex agglutination test
Enzyme-linked immunosorbent assay
45.Stool culture is a sensitive method in diagnosing chronic and asymptomatic intestinal amoebiasis. Which Media that NOT used for stool ?
Boeck and Drbohlav media
NIH polygenic media
Craig’s medium
Nelson’s medium
Blood culture
46.The mature cyst of E. Coli has...?
4 nuclei
8 nuclei
2 nuclei
6 nuclei
10 nuclei
47.E. Gingivalis was the first amoeba of humans. Only the trophozoite is found; the cystic stage being apparently absent. E. Gingivalis lives in.....?
Small intestine
Large intestine
Mucous membrane
Gingival tissues
Skin
48.Among the numerous types of free-living amoebae found in water and soil, a few are potentially pathogenic and can cause ?
Human infections
Animal infection
Parasite infection
Bacterie infection
Fungal infection
49.Free-living amoebae found in water and soil, a few are potentially pathogenic and can cause human Infections. Which species of genus that infects man?
Acanthamoeba
Entamoeba coli
Genus Naegleria
Entamoeba hartmanni
Entamoeba dispar
50.The life cycle of N. Fowleri is completed in the external environment. The amoeboid form of trophozoite multiplies by...?
The external environment
Excystation in favorable conditions
The invasive stage
The flagellate forms
Binary fission
51.Acanthamoeba culbertsoni is the species most often responsible for human infection. This is an opportiunistic protozoan pathogen found worldwide in the environment in ?
Water and soil
animals
Urine and fece
Vigetable
Aerosol and air
52.Acanthamoeba exists as active trophozoite form and a resistant cystic form. The trophozoite is large, 20–50 μm in size and characterized by spine-like pseudopodia?
Trophozoite
Acanthopodia
Bacteroidetes
Microspora
Ciliophora
53.Acanthamoeba exists as active trophozoite form and a resistant cystic form. Both trophozoites and cysts are infective. Human beings acquire by ?
Ingestion of contaminated food
Drink of contaminated water
Inhalation of cyst or trophozoite
Direct contact
Sexual contact
54.Giardia lamblia is one of the earliest protozoan parasite to have been recorded. G. Lamblia lives in the duodenum and upper jejunum and is the only protozoan parasite found in...?
Rectum
Genitourinary tract
Gastrointestinal tract
The lumen of the human small intestine
Liver cells
55.Giardia lamblia lives in the duodenum and upper jejunum and is the only protozoan parasite found in the lumen of the human small intestine. It exists in 2 forms: Trophozoite and Cyst. What is the trophozoite shape ?
Tennis racket
Round
Elongate
4 pairs of flagella
Sausage shaped
56.Giardia passes its life cycle in 1 host. What is Infective form of Giardia lamblia?
Precyst
Mature cyst
Uninucleate cyst
Binucleate cyst
Quadrinucleate cyst
57.Giardia passes its life cycle in 1 host. Infective form is mature cyst. Mode of transmission of Giardia lamblia but EXCEPT?
Man acquires infection by ingestion of cysts in contaminated water and food
Direct person to person
Male homosexuals
Mentally-ill persons
Blood transfusion
58.Trichomonas vaginalis was first observed by Donne in vaginal secretion. In females, it lives in ...?
Vagina and cevix
Small intestine
Large intestine
Mucous membrane
Skin
59.Toxoplasma gondii is an obligate intracellular coccidian parasite. T. Gondii occurs in 3 forms: Trophozoite Tissue cyst and Oocyst. What is definitive host of T. gondii?
Swine
Cow
Cat and other felines
Human
Dog
60.Isospora belli is a coccidian parasite which can cause diarrhea in humans. What is the infective stage of Isospora belli?
4 crescent¬shaped sporozoites
sporocysts
Merozoites
Sporulated oocyst containing 8 sporozoites
Sporoblasts
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