- A) MPN provides a direct count, while plate count estimates
- B) MPN estimates bacterial numbers, while plate count provides direct counts
- C) MPN uses statistical analysis, while plate count does not
- D) MPN is faster than plate count method
Microbiology MCQ
Total MCQ: 174
Create Mock TestQuiz Leaderboard
1st
Sourav
Score: 90%
Questions: 20
2nd
Priyanka
Score: 90%
Questions: 10
3rd
Vesnce
Score: 45%
Questions: 20
4th
Hector
Score: 40%
Questions: 10
MCQ Quiz on Microbiology
Which type of sample is commonly used in the MPN test?
- A) Solid food samples
- B) Water samples
- C) Air samples
- D) Soil samples
What kind of growth pattern is observed in the MPN test tubes?
- A) Uniform growth across all tubes
- B) No growth in any tubes
- C) Variable growth depending on dilution
- D) Growth only in control tubes
What is the purpose of using different dilution levels in the MPN test?
- A) To increase the sample size
- B) To improve the accuracy of results
- C) To test different types of bacteria
- D) To estimate bacteria concentration
Which of the following is NOT a common application of the MPN test?
- A) Water quality testing
- B) Dairy product safety
- C) Air quality monitoring
- D) Food safety testing
What does a positive MPN test result indicate?
- A) No bacteria present
- B) Low bacteria concentration
- C) High bacteria concentration
- D) Possible bacterial contamination
What is a “positive tube” in the context of the MPN test?
- A) A tube showing no bacterial growth
- B) A tube where bacteria are present
- C) A tube with contaminated sample
- D) A tube with no results
Which medium is commonly used in the MPN test?
- A) Nutrient agar
- B) EMB agar
- C) Lauryl tryptose broth
- D) MacConkey agar
How is the MPN result used in regulatory standards?
- A) To confirm the exact bacterial species
- B) To estimate bacterial concentrations for compliance
- C) To determine the bacterial strain
- D) To identify specific contamination sources
What does the MPN table help determine?
- A) Type of bacteria present
- B) Bacteria count estimate
- C) Antibiotic resistance
- D) Bacterial growth rate