ID

Question 0

What colour are gram-negative bacteria?

Answer 0

Pink

Question 1

What colour are gram-positive bacteria?

Answer 1

Purple

Question 2

Why would mycoplasma not take up a gram stain?

Answer 2

Lacks cell walls

Question 3

Gram positive bacteria:

Purple

Answer 3

Trueperella pyogenes
Bacillus cereus
Clostridium perfringens 
Clostridium septicum 
Corynebacterium species
Mycobacterium microtii
Streptococcus equii

Question 4

Gram-negative bacteria:

Answer 4

Acinetobacter baumannii (can acquire multi-drug resistance)
Campylobacter jejuni (gastroenteritis)
Eschericia coli 
Fusobacterium species (abscesses)

Question 5

Yeast and fungi:

Answer 5

Candida albicans (yeas tgram positive)
Malassezia pachydermitis (yeast, gram positive)
Trichophyton equinum

Question 6

Streptococci appearance:

Answer 6

String/chain of oval-shapes

Question 7

Staphylococci appearance:

Answer 7

Bunch of grapes

Question 8

What test allows you to identify between streptococci and staphylococci?
What is the result?

Answer 8

Catalase test
Production of oxygen bubbles indicates presence of catalase
If positive -> Staphylococcus

Question 9

Tetracocci appearance?

Answer 9

Groups of 4 oval shapes

Question 10

What are the 4 rod types?

Answer 10

Curved rods
Comma shaped
Diplobacilli (paired)
Streptobacilli (rods in chains)

Question 11

What shaped rod is campylobacter?

Answer 11

Comma shaped

Question 12

What colour do yeast appear on a gram stain?

Answer 12

Purple (gram positive)

Question 13

What is the result of an oxidase test?

Answer 13

Colour change from colourless to blue

Question 14

What is mycology?

Answer 14

Study of fungi

Question 15

Describe 3 types of lab diagnostics with which an infection with a micro-organism can be confirmed

Answer 15

Antigen detection
Direct microscopic observation
Detection of nucleic acids via PCR
Isolation and characterisation of micro-organisms

Question 16

What does MAT stand for?

How does it work?

Answer 16

Microscopic agglutination test

The sera from potentially infected animals are subjected to different leptospires
An animal is considered infected for a specific Leptospira when the host sera agglutinates in the presence of the leptospires
Agglutination is the clumping of cells or particles. The antibody binds multiple particles, creating a large complex

Question 17

Describe 3 considerations when collecting a clinical sample

Answer 17

A sufficient amount of material should be collected
Specimens should be stored appropriately
Specimens must be obtained aseptically

Question 18

What is the difference between bacteriocidal and bacteriostatic antibiotics?
Give an example of each

Answer 18

Bacteriostatic antibiotics inhibit growth of bacteria but don’t necessarily kill them. Eg tetracyclines
Bacteriocidal antibiotics result in the death of bacteria. Eg beta-lactams.

Question 19

What name is given to the study of viruses?

Answer 19

Virology