Discussion
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- Question
The most complex type of bacterial viruses having hexagonal head, a rigid tail with a contractile sheath and tall fibers is morphologically classified as
Options- A. A
- B. B
- C. C
- D. D
- Correct Answer
- A
- 1. Which of the following viruses are relatively thermostable?
Options- A. Human immunodeficiency virus
- B. Rubella virus
- C. Hepatits A virus
- D. Influenza virus Discuss
- 2. Which of the following bacteriophage is said to have banal symmetry?
Options- A. T2
- B. T4
- C. T6
- D. all of these Discuss
- 3. What kind of embryo is often used for viral assays?
Options- A. Mouse
- B. Rat
- C. Cat
- D. Chicken Discuss
- 4. Which of the following statements is correct?
Options- A. Up to 10% of human tumours have a viral risk factor
- B. Up to 40% of human tumours have a viral risk factor
- C. Up to 30% of human tumours have a viral risk factor
- D. Up to 20% of human tumours have a viral risk factor Discuss
- 5. Virus reproduces in living cells by
Options- A. replication
- B. duplication
- C. multiplication
- D. all of these Discuss
- 6. The most popular indirect method of counting virus particles is by
Options- A. hemagglutination assay
- B. plaque-assay
- C. counting plaque-forming units
- D. colony counting Discuss
- 7. The function of a viral capsid is
Options- A. protection against the viral genome from physical and enzymatic destruction
- B. providing binding sites that enable the virus to attach to specific receptor sites on the host cell
- C. serving as a vehicle of transmission from one host to another
- D. all of the above Discuss
- 8. The envelope of an enveloped virus is derived from
Options- A. the mitochondrion of the cell
- B. the cell membrane
- C. the endoplasmic reticulum of the cell
- D. none of these Discuss
- 9. During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as
Options- A. eclipse period
- B. rise period
- C. latent period
- D. burst size Discuss
- 10. Which of the following viruses belong to family Hepadnaviridae?
Options- A. Hepatitis A virus
- B. Hepatitis B virus
- C. Hepatitis D virus
- D. All of these Discuss
Viruses problems
Search Results
Correct Answer: Hepatits A virus
Correct Answer: all of these
Correct Answer: Chicken
Correct Answer: Up to 20% of human tumours have a viral risk factor
Correct Answer: replication
Correct Answer: hemagglutination assay
Correct Answer: all of the above
Correct Answer: the cell membrane
Correct Answer: eclipse period
Correct Answer: Hepatitis B virus
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