Protozoa (Sporozoa)

Question 1

What are the species under class Sporozoa?

Answer 1

Plasmodium spp.
Babesia spp
Toxoplasma gondii
Isospora belli
Cryptospridium parvum/hominis
Cycloapora cayetanensis spp

Question 2

Asexual method of multiplication.

Answer 2

Schizogony

Question 3

Sexual method of multiplication

Answer 3

Sporogony

Question 4

Female gametocyte

Answer 4

Macrogametes

Question 5

Male gametocyte

Answer 5

Microgametes

Question 6

Mode of transmission of Isospora belli

Answer 6

Ingestion of sporulated oocyst

Question 7

Mode of transmission of Toxoplasma gondii

Answer 7

1. Consumption of raw infected meat
2. BM transplantation
3. WBC transfusion
4. Ingestion of oocyst
5. Transplacental
6. Accidental (laboratory)

Question 8

Mode of transmission of Cryptosporidium parvum

Answer 8

Ingestion of oocyst from fecally contaminated water and food.

Question 9

Schizogony produces ________.

Answer 9

Schizont

Question 10

Sporogony produces ________.

Answer 10

Oocyst

Question 11

Inside of schizont

Answer 11

Merozoite

Remember that the another term for schizogony is merogony, hence, it is MEROzoite

Question 12

Inside of oocyst

Answer 12

Sporozoite

Question 13

Definitive host of Toxoplasma gondii

Answer 13

Cats

Question 14

Intermediate host of Toxoplasma gondii

Answer 14

Man

Question 15

Schizogony of Toxoplasma gondii

Answer 15

Animals/man

Question 16

Sporogony of Toxoplasma gondii

Answer 16

Cat’s intestine

Question 17

Laboratory test/s for Toxoplasma gondii

Answer 17

1. Biopsy
2. Serological tests –IHA, ELISA, LAT, IFA, Sabin-Feldman
3. DNA determination by PCR

Question 18

Causative agent of Toxoplasmosis

Answer 18

Toxoplasma gondii

Question 19

Infective stage of Toxoplasma gondii

Answer 19

Fecal oocysts and tissue cysts

Question 20

Diagnostic stage of Toxoplasma gondii

Answer 20

Tissue cysts

Question 21

True or False: Humans may probably be infected with Isospora belli by accidental hand-to-mouth ingestion of sporulated oocyst.

Answer 21

True

Question 22

Infective stage of Isospora belli

Answer 22

Oocysts

Question 23

Diagnostic stage of Isospora belli

Answer 23

Oocysts

Question 24

Causative agent of Sarcocystis

Answer 24

Isospora belli

Question 25

It is one of the opportunistic agents in AIDS patients.

Answer 25

Cryptosporidium parvum

Question 26

Reservoir host of Cryptosporidium parvum

Answer 26

Cattle

Question 27

Infective stage of C. parvum

Answer 27

Oocysts

Question 28

Diagnostic stage of C. parvum

Answer 28

Oocysts

Question 29

How many sporozoites in the sporulated oocysts?

Answer 29

4