| 31. | Which among the following is associated with export of exocellular enzymes? |
| a. | central mesosomes |
| b. | peripheral mesosomes |
| c. | thylakoids |
| d. | nucleus |
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Answer: (b).peripheral mesosomes
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| 32. | Ribosomes of prokaryotes have a sedimentation coefficient of? |
| a. | 90S |
| b. | 80S |
| c. | 50S |
| d. | 70S |
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Answer: (d).70S
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| 33. | Poly-beta-hydroxybutyrate(PHB) present in aerobic bacteria can serve as? |
| a. | a reserve carbon and energy source |
| b. | a reserve source of phosphate |
| c. | acceptor of oxygen |
| d. | provides buoyancy |
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Answer: (a).a reserve carbon and energy source
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| 34. | Which among the following compound when added to cytoplasmic membrane helps in maintaining the rigidity of cell? |
| a. | lipopolysaccharide |
| b. | hopanoid |
| c. | phosphoglycerides |
| d. | amino acids |
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Answer: (b).hopanoid
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| 35. | The nucleoid can be made visible under the light microscope by _________ |
| a. | Methylene blue |
| b. | Iodine |
| c. | Nile blue |
| d. | Feulgen staining |
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Answer: (d).Feulgen staining
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