| 1. | The nucleic scid core of phages is covered by a protein coat known as _______________ |
| a. | capsomere |
| b. | capsid |
| c. | outer envelope |
| d. | nuclear membrane |
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Answer: (b).capsid
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| 2. | The most complex type of bacterial virus has which of the following morphological features? |
| a. | hexagonal head and tail fibres |
| b. | no contractile sheath |
| c. | hexagonal head but no tail |
| d. | hexagonal head,rigid tail with contractile sheath |
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Answer: (d).hexagonal head,rigid tail with contractile sheath
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| 3. | Which of the following is true for the bacteriophage MV-L2 ? |
| a. | head is made up of large capsomeres |
| b. | head is made up of small capsomeres |
| c. | no contractile sheath is present |
| d. | filamentous form |
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Answer: (d).filamentous form
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| 4. | Pleomorphic viruses possess double-stranded DNA. |
| a. | True |
| b. | False |
| c. | May be |
| d. | Can't say |
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Answer: (a).True
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| 5. | What is the shape of helical phages? |
| a. | regular solids |
| b. | polyhedra |
| c. | rod-shaped |
| d. | icosahedral |
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Answer: (c).rod-shaped
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