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Cell Cultures and Characteristics Questions And Answers.
Exercise ::
Cell Cultures and Characteristics
| 1. | Which of the following bacteria can grow in acidic pH? |
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| A. | Vibrio cholerae |
| B. | Lactobacilli |
| C. | Shigella |
| D. | Salmonella |
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Published by:Michael Daani
| 2. | Cell size and cell number can be measured using |
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| A. | hemocytometer |
| B. | coulter counter |
| C. | petroff-hausser counting chamber |
| D. | All of Above |
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Published by:Michael Daani
| 3. | Which of the following is used for the proper maintenance and preservation of pure cultures? |
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| A. | Periodic transfer to fresh media |
| B. | Preservation by overlaying cultures with mineral oil |
| C. | Preservation by lyophilization |
| D. | All of Above |
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Published by:Michael Daani
| 4. | In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at |
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| A. | -60 to -78°C |
| B. | -20 to -30°C |
| C. | -30 to -48°C |
| D. | -48 to -58°C |
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Published by:Michael Daani
| 5. | The solidifying agent commonly used in preparation of media is/are |
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| A. | agar |
| B. | silica gel |
| C. | both (a) and (b) |
| D. | None of above |
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Published by:Michael Daani
