| 1. | Phase in which death rate is equal to reproduction and multiplication rate is |
| a. | action phase |
| b. | stationary phase |
| c. | medial phase |
| d. | cease phase |
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Answer: (b).stationary phase
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| 2. | An antibiotic can discolor teeth of young children permanently is |
| a. | Clindamycin |
| b. | azithromycin |
| c. | tetracycline |
| d. | streptomycin |
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Answer: (c).tetracycline
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| 3. | Bacteria which obtain their food from dead organic matter called as |
| a. | heterotrophs |
| b. | autotrophs |
| c. | saprophytic |
| d. | symbiotic |
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Answer: (c).saprophytic
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| 4. | When rod shaped bacteria appears to be in pair arrangement it is termed as |
| a. | staphylococci |
| b. | bacillus |
| c. | diplobacilli |
| d. | streptobaccili |
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Answer: (c).diplobacilli
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| 5. | Bacteria have single chromosome, i.e. they are |
| a. | diploid |
| b. | haploid |
| c. | monoid |
| d. | tetroid |
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Answer: (b).haploid
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