Microbiology I - Multiple Choice Questions
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The study of microbiology deals with the many different organisms that we are typically unable to see with the naked eye due to how small they are – i. E. They can only truly be identified and analyzed with a microscope. In the following quiz, we’re going to test your knowledge on these organisms by offering you a multiple-choice quiz on the topic. Think you know your stuff? Let’s find out.
- 1.Which of the following media is used for culturing Salmonella?
- A.
VL-broth
- B.
Sabouraud agar
- C.
Slanetz Bartley
- D.
Selenite Broth
- 2.Arabinose is a test-tube test used for:
- A.
Enterococci
- B.
Salmonella
- C.
G- bacteria
- D.
Neisseriae
- 3.
- A.
Only some G+ bacteria can grow on it selectively
- B.
Can be used to differentiate lactose fermentation
- C.
Is similar to McConkey medium
- D.
Combines selective and diagnostic properties
- 4.
- A.
It is an indirect method
- B.
Negative result means presence of microbe in the patient’s body
- C.
It is carried out in the laboratory using antibodies of animal origin
- D.
Uses a sample of patients saliva
- 5.The third phase of the PCR reaction involves:
- A.
Detection of amplification product
- B.
Amplification of DNA
- C.
Breakdown of DNA
- D.
Obtaining isolated DNA
- 6.Chocolat agar is an example of a pure enriched medium used for culturing:
- A.
Streptococci
- B.
Hemophili
- C.
Enterococci
- D.
Fungi
- 7.
- A.
Formation of H2S
- B.
Bacterium is not a glucose fermenter
- C.
Bacterium is a lactose fermenter
- D.
Bacterium is not a lactose fermenter
- 8.Optochin is used to test:
- A.
Lactose fermentation
- B.
Motility
- C.
Glucose fermentation
- D.
Antibiotic susceptibility
- 9.Löwentein-Jensen medium is used for culturing:
- A.
Enterobacteria
- B.
Tuberculosis
- C.
Salmonella
- D.
G+ bacteria
- 10.Arabinose is a test-tube test used for:
- A.
Salmonella
- B.
Neisseriae
- C.
Enterococci
- D.
G- bacteria
- 11.Choose the incorrect statement about E-tests
- A.
The testing strip has a rising Atb concentration
- B.
The test is qualitative
- C.
The strip has a scale
- D.
Principally similar to diffusion disc test
- 12.The MIC Value is:
- A.
The highest concentration that inhibits growth
- B.
The highest concentration that allows growth
- C.
The lowest concentration that inhibits growth
- D.
The lowest concentration that inhibits growth
- 13.In microdilution testing, if MIC Value > breakpoint;
- A.
Strain is suceptible
- B.
Strain is resistant
- C.
A different test is needed
- D.
None of the answers are correct
- 14.Haemagluttination Inhibition Test:
- A.
Is not an agglutination reaction
- B.
Is a neutralisation reaction
- C.
Result with a dense round target is positive
- D.
All answers are correct
- 15.Choose the correct statement about ASO:
- A.
Is a direct diagnostics reaction
- B.
The aim is to find a pathogen
- C.
ASO examination is indicated in rheumatoid fever
- D.
All of the answers are correct
- 16.Which of the following is NOT considered a classification of PCR:
- A.
Specific PCR
- B.
Multiplex PCR
- C.
Universal PCR
- D.
Segmental PCR
- 17.In the first phase of PCR reaction:
- A.
We have to find isolated DNA
- B.
Product is initially detected
- C.
We have to amplify the DNA
- D.
None of the answers are correct
- 18.Catalase test is used for:
- A.
Diagnostics of G+ cocci
- B.
Diagnostics of G+ rods
- C.
Uses hydrogen peroxide
- D.
All answers are correct
- 19.Indol test positivity is indicated by presence of:
- A.
A red ring
- B.
Colour change to yellow
- C.
Colour change to blue
- D.
Increased turbidity
- 20.Octal codes are used in:
- A.
MIU test
- B.
Optochin test
- C.
Plate tests
- D.
Catalase test
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