VMB Corynebacterium

Question 1

Are Corynebacterium motile and sporing

Answer 1

They are non motile and non sporing hence they could not infect me while checking them on blood agar

Question 2

What is the media for growing Corynebacterium

Answer 2

Blood media or serum

Question 3

Optimum temperature for growth of Corynebacterium

Answer 3

37°C

Question 4

What are the major biochemical characteristics of Corynebacterium

Answer 4

Catalase negative and oxidase negative

Question 5

State two Corynebacterium species that ferment carbohydrate with the formation of acids and are also toxin producing

Answer 5

Corynebacterium diphtheriae and Corynebacterium pseudotuberculosis

Question 6

State two Corynebacterium species that ferment carbohydrate with the formation of acids

Answer 6

Corynebacterium diphtheriae and Corynebacterium pseudotuberculosis

Question 7

Which Corynebacterium Form little or no acid

Answer 7

Corynebacterium renale and Corynebacterium cystitidis

Question 8

All strains of Corynebacterium are Urease

Answer 8

Positive

Question 9

Name the disease caused by Corynebacterium pseudotuberculosis in goat

Answer 9

Caseous lymphadenitis

Question 10

When you culture Corynebacterium in blood agar it is haemolytic

Answer 10

True

Question 11

What is the is disease caused by Corynebacterium renale in cattle

Answer 11

Cystitis and pyelonephritis

Question 12

Selective medium for Corynebacterium diphtheriae exam questions

Answer 12

1. Loefflers medium
2. Tinsdale agar
3. Mcleod’s blood agar containing potassium tellurite

Question 13

Selective medium for Corynebacterium diphtheriae exam questions

Answer 13

1. Loefflers medium
2. Tinsdale agar
3. Mcleod’s blood agar containing potassium tellurite

Question 14

On tellurite’s agar the colonies are what color

Answer 14

Grey - black

Question 15

Tinsdale tellurite agar the colonies color are

Answer 15

Brownish - Grey with garlic odour

Question 16

They are Gram positive rods showing
typical“Chinese letters” form which

Answer 16

Corynebacterium diphtheriae

Question 17

Typical metachromatic granules of Corynebacterium may be
demonstrated with

Answer 17

Albert staining

Question 18

For laboratory diagnosis of Corynebacterium diphtheriae samples are taken from?

Answer 18

Swab from nose, throat, and other lesions

Question 19

Smears are stained with

Answer 19

Gram stain or methylene blue

Question 20

Smears are stained with

Answer 20

Gram stain or methylene blue

Question 21

There is usually growth on Loefller slant incubated at 37oC in 18-24hours and on
tellurite agar in 36-48 hours true or false

Answer 21

True

Question 22

__ and ___ can be diagnosed by blood stained urine of the infected animal

Answer 22

C. renale and Actinobaculum suis

Question 23

Corynebacterium Ulcerans can cause

Answer 23

Mastitis in cow and tonsillitis and pharyngitis

Question 24

Does Rhodococcus equi grow on macConkey

Answer 24

No

Question 25

What are the biochemical characteristics of Rhodococcus equi in terms of Catalase and oxidase

Answer 25

Catalase Positive and oxidase negative