MCQs ON TYPES OF CULTURE MEDIA |MCQs IN MICROBIOLOGY WITH ANSWERS | RAW MATERIAL USED IN CULTURE MEDIA |

 

MICROBIOLOGY MCQ 

MULTIPLE CHOICE QUESTIONS 

ON

RAW MATERIAL USED FOR CULTURE MEDIA 

AND TYPES OF CULTURE MEDIA

 MICROBIOLOGY MCQs WITH ANSWER KEY 

1.The solidifying agent used in microbiology laboratories to solidify medium

  A) Cellulose 
B) Peptone
C) Thioglycollate
D) Agar

... Answer is D)
1.The solidifying agent used in microbiology laboratories to solidify medium is Agar "

2.Blood agar medium is

A) Enrichment medium
B) Enriched mediume
C) Selective medium
D) Differential medium

... Answer is B)
Blood agar medium is Enriched mediume.

3.Peptone water and nutrient broth are

A) Enriched media
B) Enrichment media
C) Basal media
D) Differential media
a) Enriched media b) Enrichment media c) Basal media d) Differential media

... Answer is C)
Peptone water and nutrient broth are Basal media .

4. The most commonly used solidifying agent Agar is obtained from

A) Brown algae
B) Red algae
C) Green alga
D) Blue-green algae

... Answer is B)
The most commonly used solidifying agent Agar is obtained from Red algae "

5. Blood agar media is used for the growth of?

A) Fungi
B) Fastidious bacteria
C) Halophiles
D) Red algae only

... Answer is B)
Blood agar media is used for the growth of Fastidious bacteria .

6. Example of indicator medium is

A) Nutrient Agar Medium
B) Mac-Conkey’s agar Medium
C) Wilson and Blair Medium
D) Czapeck-dox medium

... Answer is C)
Example of indicator medium is Wilson and Blair Medium .

7. What is the concentration of agar in solid media

A) 3 to 4 %
B) 1.5 to 2 %
C) 10 t0 15 5
D) 0.5 to 1%

... Answer is B)
The concentration of agar in solid media is 1.5 to 2 %

8. For preparation of semi-solid media agar used in concentration between

A) 1 to 2 %
B) 1.5 to 2.5 %
C) 0.2 t0 0.5%
D) 0.05 to 0.009%

... Answer is C)
For preparation of semi-solid media agar used in concentration between 0.2 t0 0.5%.

9.Which of the following is the example of Anaerobic medium

A) Robertson cooked-meat medium
B) Nutrient agar
C) Nutrient broth
D) Mac-Conkey’s agar

..Answer is A)
The example of Anaerobic medium from above is Robertson cooked-meat medium .

10. Which of the following is not true about agar?

A) Source of nutrient
B) Long chain Polysaccharide
C) Melts at 95 to 98 degree Centigrade
D) Solidifies at approx. 40 degree Centigrade

... Answer is C)
Agar is not a Source of nutrient "

11. In the medium other than nutrients, if any substance is used in excess, that medium is

A) Indicator medium
B) Special medium
C) Enriched medium
D) Sugar medium

... Answer is C)
In the medium other than nutrients, if any substance is used in excess, that medium is called as Enriched medium

12. Culture medium used for growth of fungi is

A) Nutrient agar media
B) Sabouraud’s medium
C) Nutrient broth
D) Minimal agar medium

... Answer is B)
Culture medium used for growth of fungi is Sabouraud’s medium .

13. Agar media can be enriched with blood for the identification of?

A) Bacteria which can grow in anaerobic conditions
B) Bacteria which can cause hemolysis
C) Viruses from other microorganisms
D) Bacteria which can grow in higher hydrostatic pressures

... Answer is B)
Agar media can be enriched with blood for the identification of Bacteria which can cause hemolysis

14.Which of the following is a rich source of B vitamins?

A) Peptone
B) Yeast extract
C) Beef extractr
D) Agar
a) Peptone b) Yeast extract c) Beef extract d) Agar

... Answer is B)
Yeast extractis a rich source of B vitamins? .

15. Which of the following is a characteristic of beef extract?

A) Product resulting from the digestion of proteinaceous materials
B) Aqueous extract of lean beef tissue
C) Aqueous extract of yeast cells
D) Complex carbohydrate obtained from certain marine algae

... Answer is B)
beef extract is obtained from aqueous extract of lean beef tissue .

16.A culture medium the exact composition of which is not known was called as

A) Synthetic media
B) Complex media
C) Defined media
D) Natural media

... Answer is B)
. A culture medium the exact composition of which is not known was called as Complex media .

17. In chocolate agar media the concentration of blood is

A) 5 -10%
B) 1 to 2 %
C) 20 to 30%
D) 0.5 to 1%

... Answer is A)
In chocolate agar media the concentration of blood is 5 -10% .

18.Which of the following is not a storage media.

A) Egg saline medium
B) Dorsets egg medium
C) Blood agar slants
D) None of the above

... Answer is D)
None of the above .

19.Which of the following is not true about peptone.

A) It is hygroscopic
B) Obtain from lean meat, heart muscle, casein
C) Mainly supply nitrogenous material
D) None of the above.

... Answer is D)
None of the above

20. Yeast extract is prepared from

A) Casein
B) lean meat
C) heart muscle
D) Saccharomyces

... Answer is D)
Yeast extract is prepared from Saccharomyces .

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