| 11. | Isolation of pure culture refers to ___________ |
| a. | purification of culture |
| b. | introduction of inoculum |
| c. | separation of a single colony |
| d. | to grow microorganisms on a surface |
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Answer: (c).separation of a single colony
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| 12. | Enrichment media allows the growth of a large number of varied bacterial species. |
| a. | True |
| b. | Flase |
| c. | May be |
| d. | Can't say |
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Answer: False
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| 13. | Which of the following is not a physical method for selection of pure culture? |
| a. | Heat treatment |
| b. | pH of the media |
| c. | Cell size and motility |
| d. | Use of dilute media |
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Answer: (d).Use of dilute media
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| 14. | In physical method of selection, endospore-forming bacteria can be obtained by heating the mixed culture to _____________ |
| a. | 70 degree C for 10 minutes |
| b. | 80 degree C for 10 minutes |
| c. | 60 degree C for 10 minutes |
| d. | 90 degree C for 10 minutes |
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Answer: (b).80 degree C for 10 minutes
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| 15. | Vibrio cholerae can grow in a medium with a pH of _______ |
| a. | 5.5 |
| b. | 7.0 |
| c. | 8.5 |
| d. | 2.0 |
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Answer: (c).8.5
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