Microbiology MCQ (Quiz-2)  

Sterilization of culture media

Multiple choice questions with answer key

S. Y. B. PHARM Sem - III  (UNIT - 3)  

AS PER PCI SYLLABUS






1. L-Lysine is produced from
      A) Mycobacterium sps


... Answer is : B) Corynebacterium glutamicum


2. Theobacillus thio oxidans grow at pH




... Answer is : D) 1.0

3. Discontinuous heating is called





... Answer is : B) Tantalization

4. The condition required for autoclave




... Answer is : A) 150 oC temp. for 1 hr.


5. Blood agar medium is




... Answer is : C) Enriched medium

6. Lyophilization means .




... Answer is : A) Freeze-drying

7. Phenol co-efficient indicates




... Answer is : C) Efficiency of a disinfectant

8. Agar is obtained form





... Answer is : A) Red algae


9. Enhancement of virulence in bacteria is known as





... Answer is : B) Exaltation

10. Spores are killed by




... Answer is : D) Both A and B

11. The orderly increase in the quantity of all of the cellular components is known as




... Answer is : A) Growth

12. Slow freezing requires the conditions




... Answer is : B) – 15 oC to 3 to 72 hrs.

13. Isolation is




... Answer is : D) Separation of a single colony

14. Lysozyme is effective against




... Answer is : A) Gram positive bacteria

15. Infrared radiation is a method of sterilization by




... Answer is : C) Mechanical method

16. Temperature used for hot air oven is




... Answer is : D) 160 oC for 1 hour

17. This is an agar plate method and is commonly used for estimation of the number of bacteria in milk.




... Answer is : C) Standard Plate Count (SPC)

18. A gram positive organism which produces swarming on culture medium is




... Answer is : A) Proteus

19. For effective sterilization in an autoclave the temperature obtained is




... Answer is : B) 120 oC

20. Glassware are sterilized by




... Answer is : C) Hot air oven