IDENTIFICATION OF BACTERIA QUIZ

Which of the following(s) show(s) positive results for phenylalanine deaminase test?

Proteus

All of these

Providencia

Morganella

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a substitute for crystal violet used in gram-staining procedure?

Bromocresol green

Safranin

Methylene blue

Phenolpthalene

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following shows a positive urease test?

None of these

Proteus

Both (a) and (b)

Klebsiella

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following organisms can be demonstrated with silver impregnation method?

Spirochaetes

Salmonella

Vibrios

Shigella

TRUE ANSWER : ?
YOUR ANSWER : ?

At what concentration of sulphuric acid, Nocardia resists decolourization?

8% sulphuric acid

10% sulphuric acid

0.5% sulphuric acid

5% sulphuric acid

TRUE ANSWER : ?
YOUR ANSWER : ?

Catalase production is negative in which of the following?

Proteus

Staphylococcus

Salmonella

Streptococcus

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following inference(s) indicate(s) the ability of an organism to utilize citrate as a sole source of carbon in Simmon's citrate medium?

Appearance of growth

None of these

Blue colour

Both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following(s) is/ are oxidase-positive bacteria?

Vibrio

All of these

Neisseria

Pseudomonas

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a primary stain for acid fast staining of mycobacteria?

Methylene blue

Carbol fuchsin

Crystal violet

Geimsa

TRUE ANSWER : ?
YOUR ANSWER : ?

The production of sufficient acid by fermentation of glucose leads to decrease in pH such that pH of the medium falls below 4.5. Which of the following test can detect it?

Indole test

Citrate utilization test

Methyl red test

Voges-Proskauer test

TRUE ANSWER : ?
YOUR ANSWER : ?

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