Deck 1

Question 1

What is the principle of AGID (agar gel immunodiffusion test)?

Answer 1

the simultaneous migration of Ag and Ab toward each other through an agar gel matrix. once they come in contact, they combine and form a precipitate which is visible in the gel matrix and results in a visible line

Question 2

2. Division of the media used for cell culture

a) liquid, solid
b) natural, synthetic
c) protein-based, sugar-based

Answer 2

b) natural, synthetic

Question 3

3. In blocking ELISA positive result is:

a) change of colour
b) no colour

Answer 3

no colour

Question 4

Give an example of facultative pathogens.

Answer 4

E. coli, candida, acanthamoeba

Question 5

5. Animal notifiable diseases are reported to

a) Organisation of International disease elimination
b) World health organisation
c) World organisation for animal health

Answer 5

c) World organisation for animal health

Question 6

What are stages of epizootic process?

Answer 6

inter-epizootic, pre-epizootic, ascending, culmination, descending, post-epizootic

Question 7

What is epizootiological triad?

Answer 7

animal population, aetiological agent, environmental factors

Question 8

8. What is abortive infection:

a) infection causing abortion
b) infection that disappear after prodromal period
initiate immune system but it is recognised by memory cells of the immune system
c) latent infection in pregnant animals
d) fetal infection

Answer 8

b) infection that disappear after prodromal period
initiate immune system but it is recognised by memory cells

Question 9

What are ways of etiological agents transmission

Answer 9

direct contct, vector, vehicle, air-borne (from affected to susceptible individual)

Question 10

10. What test is virological

a) virus neutralisation
b) PCR
c) Western blot

Answer 10

a) virus neutralisation

Question 11

What is the principle of ELISA test?

Answer 11

reaction between antigen and antibody. one of them is labelled with suitable enzyme
result is the enzymatic activity of Ag-Ab complex
using suitable substrate that is degraded by enzyme into coloured products

Question 12

12. What is the cytopathic effect in cell cultures?

a) mutation of the cells
b) any changes of the cells after viral infection
c) destruction of the cells

Answer 12

b) any changes of the cells after viral infection

Question 13

13. In complement fixation test positive result is:

a) haemolysis
b) no haemolysis

Answer 13

b) no haemolysis

Question 14

What are stages of infectious process?

Answer 14

incubation, prodromal, manifestation, remission

Question 15

Forms of infectious diseases according to clinical signs manifestation / duration:

Answer 15

peracute: within a very short time
acute: few days - 2 weeks
subacute: 2 weeks - 1 month
subchronic: few months
chronic: many months

Question 16

17. Hyperimmune serum application is

a) natural active immunisation
b) natural passive immunisation
c) artificial passive immunisation

Answer 16

c) artificial passive immunisation

Question 17

18. What is basic characteristics of DNA polymerase in PCR

a) thermostability
b) thermolability
c) not important for PCR

Answer 17

a) thermostability

Question 18

19. Half time of maternal antibodies is

a) period in which 50% of antibody is declined
b) concentration of antibodies providing 50% protection of young

Answer 18

a) period in which 50% of antibody is declined

Question 19

Give an example of biological immunomodulators.

Answer 19

bacteria, extracts of bacteria or fungi, vitamins

Question 20

What is the principle of haemagglutination inhibition test?

Answer 20

to inhibit agglutination activity of some viruses such as parvo, parainfluenza, adeno