MCQ: Virology 2 and Answers

This post contains eight (8) multiple choice questions (MCQs) in virology. The answer keys are given at the end of the post.

1. Viruses that contain two complete copies of positive strand RNA and the enzyme reverse transcriptase are:
   a. Toga viruses
   b. Rhabdoviruses
   c. retroviruses
   d. Reoviruses
   e. Enteroviruses
2. The time from adsorption of a bacteriophage to release of newly synthesized bacteriophage is generally
   a. 1-5 minutes
   b. 20-40 minutes
   c. 1-4 hours
   d. 6-24 hours
   e. 1-2 days
3. Bacteriophages that can enter into stable, long-term relationships with their hosts are called:
   a. Lytic phages
   b. Defective phages
   c. virulent phages
   d. lazy phages
   e. Temperate phages
4. The positive strand of certain viruses does not act as a message but becomes converted into DNA and integrated into the host cellular DNA. These viruses are
   a. Rhinoviruses
   b. Enteroviruses
   c. Retroviruses
   d. Reoviruses e. Picornaviruses
5. Infants infected with cytomegaloviruses (CMV) in utero may suffer from:
   a. Mental retardation
   b. enlarged spleen
   c. liver damage
   d. any of these
   e. none of these
6. Viroids are unusual in that they:
   a.have no capsid protein or envelops
   b. contain RNA
   c. are barely visible with the light microscope
   d. can cause disease in plants
   e. are retroviral
7. Creutzfeldt-Jakob disease (CJD) , kuru, scrapie, and Mad Cow disease are caused by:
   a. Viroids
   b. Retroviruses
   c. DNA viruses
   d. Prions
   e. RNA viruses
8. The human virus that has been associated with Burkett’s lymphoma ( a malignant tumor of the jaw) is:
   a. Cytomegalovirus
   b. human papilloma virus
   c. retroviruses
   d. Epstein- Barr virus
   e. Enterovirus

Answers of MCQs Virology-2

1. c (Retroviruses)
2. b (20-40 minutes)
3. e (Temperate phages)
4. c (Retroviruses)
5. d ( Any of these)
6. a (have no capsid protein or envelops)
7. d (Prions)
8. d (Epistein-Barr Virus)