Giardia doudenalis

Question 1

A general term for the active, feeding, and reproducing stage of most protozoa

Answer 1

Trophozoitie

Question 2

Giardia duodenalis is a protozoan that affects what system of its host?

Answer 2

Gastrointestinal

Question 3

What are the characteristics of Giardia doudenalis in its trophozoitie form?

Answer 3

Motile with flagella (tennis racket with eyes)

Question 4

Which form of Giardia duodenalis is resistant?

Answer 4

Cyst

Question 5

Giardia doudenalis has seven assemblages A-G. What are the host preferences of A, C, D, and F?

Answer 5

A: Human
C-D: Dog
F: Cat

Question 6

Which assemblage can cross infect dogs and cats?

Answer 6

A

Question 7

Giardia doudenalis multiplies by what type of reproduction?

Answer 7

Binary fission in the small intestine

Question 8

How does Giardia doudenalis survive when conditions are not ideal?

Answer 8

They encyst (the cysts can be passed and survive long term in the environment

Question 9

Giardia doudenalis is ingested by a host through what means?

Answer 9

Water or direct contact

Question 10

How are Giardia doudenalis diagnosed?

Answer 10

Fecal floatation (cysts)
Direct saline smear (trophozoites)
Elisa (antigen)

Question 11

What should a fecal float contain when diagnosing Giardia doudenalis?

Answer 11

Zinc sulfate/ sugar