Deck 2

Question 1

Giardia divides by

Answer 1

binary fission

Question 2

which organelles form the apical complex?

Answer 2

polar ring, conoid, subpellicular microtubules, micronemes, rhopty, micropore
(not included- golgi apparatus, mitochondria, nucleus, ER, posterior ring)

Chat GPT:

1. Rhoptries
2. Micronemes
3. Dense Granules
4. Conoid (in some species)
5. Polar Rings

Question 3

which genera belong to monoxenous coccidia

Answer 3

Eimeria
order: Eimerida
Family: Eimeriidae
Genus: Eimeria

Question 4

Sporogony of Cryptosporidium spp. occurs in

Answer 4

final host

Question 5

The life cycle of Plasmodium spp. has 4 stages:

Answer 5

1 sexual and 3 asexual
gametogony & sporogony in mosquitoe

Question 6

What does sporulated oocyst of Cryptosporidium spp. look like? draw and describe

Answer 6

1 shell (not 2 thin? acc. to chat gpt yes) 4 sporozoites, no sporocyst, round, very small (5-7um)

Question 7

Macroschizonts of Theileria spp. are located in

Answer 7

lymphocytes before moving to erythrocytes

Question 8

Describe the morphology of Trypanosoma

Answer 8

Question 9

Fully sporulated oocysts were found in the faeces of a rabbit. what species is most likely represented? write the name and describe

Answer 9

Eimeria spp.
small
2 thin shells
sporulated (4 sporocysts, each contain 2 sporozoites)
oval/round
transparent

Question 10

Describe the life cycle (sarcocystis)

Answer 10

Heteroxenous life cycle
IH= herbivore/omnivore (merogony, asexual)
FH= carnivore, man (gametogony, sexual, sporogony)
1. The sheep ingest sporulated sporocyst (shed in feces of FH) contaminated feed that excyst in the intestine and undergo merogony in endothelial cells
2. bradyzoite in muscle- the merozoits are named metrocysts (young cysts) and will be transferred to the muscles by lymphocytes and is now called bradyzoits (mature cells). Bradyzoits are infective for the final host and multiply within the muscle tissue
3. Carnivore ingest a cyst containing undercooked meat (?)
4-8. Gametogony in the small intestine: bradyzoits in the lamina propria of small intestine become macrogametes and microgametes and form a zygote
9. Zygote transformed to oocyst
10-13. sporogony, sporulation of oocyst. occurs inside the final host and is shed in feces.

Question 11

In theileria, macrogamont in lymphocyte is known as ?

Answer 11

Koch’s blue body

Question 12

Which tissue/ organ contains the highest number of Theileria ?

Answer 12

Spleen is the main organ

Question 13

In erythrocytes of Theileria we find:

Answer 13

piroplasms

Question 14

T. cruzi belongs to

Answer 14

sterocaria (posterior group)

Question 15

How is T. equiperdum transmitted?

Answer 15

coitus/mating (mechanical)

Question 16

How is T. equiperdum diagnosed?

Answer 16

Clinical signs- pyrexia, local edema of genitalia and mammary gland, edematous cutaneous plaques, usually over ribs and disappear and returns in intervals

Demonstration of parasite- preputial or vaginal scraping/washing, later an infection: aspiration of cutaneous edematous plaque (very rare to find in blood)

Serological examination- CFT, ELISA, IFAT

Question 17

Trypanosoma belongs to which order?

Answer 17

Trypanosomatida

Question 18

How many free flagella do Trypanosoma have?

Answer 18

1 or 0, depend on developmental stage

Question 19

What stage of T. cruzi multiplies in vertebrate host?

Answer 19

Amastigote

Question 20

Form of Leishmania in vector

Answer 20

promastigote