Viruses From Animal and Plants problems
- 1. What does the positive strand in double stranded RNA viruses stands for?
Options- A. rRNA
- B. tRNA
- C. mRNA
- D. None of these Discuss
Correct Answer: mRNA
- 2. The reovirus and influenza virus contain
Options- A. 10 different segments of dsRNA and 8 different segments of ssRNA respectively
- B. 8 different segments of dsRNA and 10 different segments of ssRNA respectively
- C. 5 different segments of dsRNA and 7 different segments of ssRNA respectively
- D. 7 different segments of dsRNA and 5different segments of ssRNA respectively Discuss
Correct Answer: 10 different segments of dsRNA and 8 different segments of ssRNA respectively
- 3. The structural abnormality of cells is termed as
Options- A. hyperplasia
- B. anaplasia
- C. metastasis
- D. all of these Discuss
Correct Answer: anaplasia
- 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. 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
- 6. 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
- 7. 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
- 8. Mumps vaccine is prepared from the cultures of
Options- A. chick fibroblasts
- B. African green monkey cells
- C. healthy calves
- D. sheep Discuss
Correct Answer: chick fibroblasts
- 9. 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
- 10. 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
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