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SEMINR1 - Parasitology (Miscellaneous Protozoa)

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

True or False. Balantidium coli is primarily transmitted through sexual contact.

a)

True

b)

False

2.

Characterized by tender colon, anemia, cachexia, occasional diarrhea with alternating constipation

a)

Carrier state

b)

Acute balantidiasis

c)

Chronic balantidiasis

d)

Extraintestinal balantidiasis

3.

Can be used to confirm isosporiasis

a)

DFS

b)

Enterotest

c)

Intestinal biopsy

d)

Modified AFS

4.

Infective stage of Isospora belli

a)

Mature oocyst

b)

Sporozoites

c)

Merozoites

d)

Microgametocyte

5.

True or False. Symptomatic state of isosporiasis is considered self-limiting.

a)

True

b)

False

6.

Recommended treatment for asymptomatic isosporiasis

a)

Bland diet and rest

b)

Trimethoprim & SXT

c)

Pyrimethamine & sulfadiazine

d)

All of the given choices

7.

Umbrella term of Sarcocystis spp. known to infect humans

a)

Sarcocystis hovihominis

b)

Sarcocystis suihominis

c)

Sarcocystis lindemanni

d)

Sarcocystis spp.

8.

Specimen of choice for the diagnosis of Sarcocystis infection

a)

Stool

b)

Urine

c)

Muscle samples

d)

Intestinal biopsy

9.

True or False. Accidental ingestion of oocysts from stool of other animals can be a mode of transmission for Sarcocystis spp.

a)

True

b)

False

10.

Recommended treatment for Sarcocystis infection involving striated muscles.

a)

Trimethoprim & sulfamethoxazole

b)

Pyrimethamine & sulfadiazine

c)

Bland diet and rest

d)

None of the given choices

11.

Oocysts of this parasite may resemble yeasts.

a)

Balantidium coli

b)

Isospora belli

c)

Sarcocystis spp.

d)

Cryptosporidium parvum

12.

Morphologic form of Cryptosporidium spp. associated with autoinfection

a)

Sporozoite

b)

Thin-shelled oocyst

c)

Thick-shelled oocyst

d)

Macrogametocyte

13.

True or False. Proper disinfection of equipment using commercial bleach and 5-10% household ammonia can reduce the transmission of cryptosporidiosis.

a)

True

b)

False

14.

True or False. Saline is recommended for preparation of DFS of stool suspected of having Blastocystis hominis as iodine usually lyses the parasite.

a)

True

b)

False

15.

Oocysts of this parasite ultrafluoresce under UV light microscopy.

a)

Isospora belli

b)

Sarcocystis spp.

c)

Cyclospora cayetanensis

d)

Cryptosporidium parvum

16.

Has no known association among immunocompromised patients

a)

Isospora belli

b)

Enterocytozoon bieneusi

c)

Cyclospora cayetanensis

d)

Cryptosporidium parvum

17.

Associated with enteritis among AIDS patients

a)

Enterocytozoon bieneusi

b)

Encephalitozoon & Pleistophora

c)

Microsporidium & Nosema

d)

Nosema

18.

Associated with fatal infection in severely immunocompromised infant

a)

Enterocytozoon bieneusi

b)

Encephalitozoon & Pleistophora

c)

Microsporidium & Nosema

d)

Nosema

19.

Characteristics of microsporidia in Gram staining

a)

Gram-Positive

b)

Gram-Negative

c)

Gram-Variable

d)

N/A

20.

Contraindicated in pregnant women infected with toxoplasmosis.

a)

Trisulfapyrimidines

b)

Spiramycin

c)

Corticosteroids

d)

Pyrimethamine

21.

Correct sequence based on its utilization during Gram staining procedure: IODINE

a)

1

b)

2

c)

3

d)

4

22.

Correct sequence based on its utilization during Gram staining procedure: SAFRANIN

a)

1

b)

2

c)

3

d)

4

23.

Correct sequence based on its utilization during Gram staining procedure: CRYSTAL VIOLET

a)

1

b)

2

c)

3

d)

4

24.

Correct sequence based on its utilization during Gram staining procedure: ALCOHOL

a)

1

b)

2

c)

3

d)

4

25.

True or False. Balantidium coli is the largest protozoan parasite known to humans.

a)

True

b)

False