Mumps vaccine is prepared from the cultures of chick fibroblasts African green m

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Question
Mumps vaccine is prepared from the cultures of
Options
A. chick fibroblasts
B. African green monkey cells
C. healthy calves
D. sheep

Correct Answer

chick fibroblasts

Viruses From Animal and Plants problems

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1. Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms?
Options
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

Discuss

Correct Answer: Reassortment of RNA segments from different influenza viruses

2. Animal viruses with capsids displaying helical symmetry include
Options
A. measles and mumps
B. influenza
C. rabies
D. all of these

Discuss

Correct Answer: all of these

3. What is the function of positive strand in double stranded RNA viruses?
Options
A. Synthesis of protein
B. Production of ribosomes
C. Both (a) and (b)
D. None of these

Discuss

Correct Answer: Synthesis of protein

4. Which type of interferon is produced by virus-infected cells?
Options
A. ?
B. ?
C. Both (a) and (b)
D. None of these

Discuss

Correct Answer: Both (a) and (b)

5. The structural abnormality of cells is termed as
Options
A. hyperplasia
B. anaplasia
C. metastasis
D. all of these

Discuss

Correct Answer: anaplasia

6. Viropexis takes place in the phagocytic vacuoles and is due to the action of enzymes
Options
A. DNA gyrase
B. lysosomal protease
C. lysosomal lipase
D. all of these

Discuss

Correct Answer: lysosomal protease

7. Negri bodies are found in cells infected with
Options
A. Paramyxoviruses
B. Vaccinia virus
C. Fowlpox virus
D. Rabies virus

Discuss

Correct Answer: Rabies virus

8. The RNA sarcoma viruses, the most strongly transforming viruses may transform which of the following cells in a culture?
Options
A. fibroblasts
B. myoblasts
C. iris epithelial
D. all of these

Discuss

Correct Answer: all of these

9. The two major components of viruses are
Options
A. fat and protein
B. nucleic acid and protein
C. carbohydrate and nucleic acid
D. fat and carbohydrate

Discuss

Correct Answer: nucleic acid and protein

10. The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called
Options
A. vitropexis
B. viropexis
C. ectodesmata
D. vivopexis

Discuss

Correct Answer: viropexis

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