Microbiology - Viruses From Animal and Plants
Exercise :: Viruses From Animal and Plants - Section 1
- Viruses From Animal and Plants - Section 1
| 6. |
Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms? |
| A. |
Somatic recombination of heavy and light chains | | B. |
Expression of several different capsule types | | C. |
Changing the receptor binding canyon that docks with the host receptor | | D. |
Reassortment of RNA segments from different influenza viruses |
Answer: Option D
Explanation:
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| 7. |
The nucleocapsid is covered by an outer membrane like structure called |
| A. |
envelope | | B. |
covering | | C. |
membronocapsid | | D. |
all of these |
Answer: Option A
Explanation:
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| 8. |
Which type of interferon is produced by virus-infected cells? |
| A. |
α | | B. |
β | | C. |
Both (a) and (b) | | D. |
None of these |
Answer: Option C
Explanation:
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| 9. |
Fluorescence microscopy can be used for the diagnosis of |
| A. |
Subacute sclerosing panencephalitis | | B. |
Herpes simplex encephalitis | | C. |
Rabies | | D. |
All of these |
Answer: Option D
Explanation:
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| 10. |
Viral matrix proteins are |
| A. |
exposed on the surface of the virus | | B. |
found mainly on naked viruses | | C. |
anchor the envelope of enveloped viruses | | D. |
part of the nucleoprotein core of viruses |
Answer: Option C
Explanation:
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