| 16. | Disease-producing species occurring in a mixed culture can be selected by taking advantage of _________ |
| a. | its pathogenic properties |
| b. | special carbon source |
| c. | special nitrogen source |
| d. | toxic chemicals |
| View Answer Report Discuss 50-50! |
|
Answer: (a).its pathogenic properties
|
| 17. | Treponema sp. can be selected by taking advantage of ____________ |
| a. | small cell size |
| b. | motility |
| c. | dilute media |
| d. | small cell diameter and bacterial motility |
| View Answer Report Discuss 50-50! |
|
Answer: (d).small cell diameter and bacterial motility
|
| 18. | A large cluster of colonies are obtained in streak plate method. |
| a. | True |
| b. | False |
| c. | May be |
| d. | Can't say |
| View Answer Report Discuss 50-50! |
|
Answer: Use of dilute media
|
| 19. | Roll-tube technique is used to isolate ___________ |
| a. | aerobes |
| b. | anaerobes |
| c. | facultatives |
| d. | stringent anaerobes |
| View Answer Report Discuss 50-50! |
|
Answer: (d).stringent anaerobes
|
| 20. | In pour-plate method,the medium should be maintained at what temperature? |
| a. | 37 degree C |
| b. | 67 degree C |
| c. | 45 degree C |
| d. | 0 degree C |
| View Answer Report Discuss 50-50! |
|
Answer: (c).45 degree C
|