Lab 10 - Chlamydia

Question 1

Infectious form of Chlamydia species is elementary in the body.

Answer 1

True

Question 2

NAD is needed for culturing of Chlamydia species.

Answer 2

False

Question 3

Contagious bovine pleuropneumonia is caused by M. mycoides spp. mycoides SC.

Answer 3

True

Question 4

Mycoplasma bovism form fried egg shaped colonies on solid media.

Answer 4

True

Question 5

Mycoplasma sp. can cause turbidity in liquid medium.

Answer 5

False, (no turbidity)

Question 6

Cat scratch disease is caused by Anaplasma sp.

Answer 6

False, (by B. henselae)

Question 7

Heartwater disease of ruminants is caused by Ehrlichia ruminantium.

Answer 7

True

Question 8

Mycoplasma haemofelis can cause cat haemobartonellosis.

Answer 8

True

Question 9

Chlamydia psittachi causes ornithosis.

Answer 9

True

Question 10

Chlamydia can be found in infected host body only.

Answer 10

True

Question 11

Chlamydia pneomoniae has cell wall.

Answer 11

True

Question 12

Mycoplasmas are the smallest free-living microorganisms.

Answer 12

True

Question 13

Enzootic pneumonia of swine is caused by Mycoplasma hyopneumoniae.

Answer 13

True

Question 14

Contagious bovine pleuropneumonia is caused by M. mycoides ssp. Mycoides LC.

Answer 14

False, (M. mycoides ssp. mycoides SC)

Question 15

Mycoplasmas have typical colony forms, like fried eggs.

Answer 15

True

Question 16

Cat scratch disease is caused by Rickettsia rickettsii.

Answer 16

False, (by B. henselae)

Question 17

The causative agent of Q-fever needs arthropod vectors, because it cannot survive in the environment for a long time.

Answer 17

False, no vectors are needed

Question 18

All members of the family Rickettsia are obligate cell parasites.

Answer 18

True

Question 19

Trachoma is caused by Chlamydia psittaci in human.

Answer 19

False, (by chlamydia trachomatis)

Question 20

The resistance of reticulate body is higher than resistance of elementary body.

Answer 20

False

Question 21

Fuchsin is used as counter staining in the Stamp-staining.

Answer 21

False, (3% diluted malachite-green)

Question 22

Mycoplasma gallisepticum can cause chronic respiratory disease in birds.

Answer 22

True

Question 23

Contagious bovine pleuropneumonia is caused by Mycoplasma bovis.

Answer 23

False, (by M. mycoides ssp. mycoides SC)

Question 24

Mycoplasmas are obligate anaerobic bacteria.

Answer 24

False, (facultative anaerobic)

Question 25

Mycoplasmas have pleomorphic shape.

Answer 25

True, pleomorphic pear shaped

Question 26

Q-fever is caused by Coxiella burnetti.

Answer 26

True

Question 27

Rickettsia species can propagate in lymphoid and endothel cells only.

Answer 27

False, (Rickettsia, Coxiella: propagate in all cell types) and (Ehrlichia, Neorickettsia: lymphoid cells, endothel cells)

Question 28

Chlamydia psittaci can cause conjunctivitis in birds.

Answer 28

True

Question 29

As a result of Stamp-staining chlamydia is green.

Answer 29

False