Viruses Solved MCQs

  Viruses Multiple Choice Questions MCQs with Answers 1. Which disease is caused by a virus? a. Malaria b. Whooping cough c. Pol...

 

Viruses Multiple Choice Questions MCQs with Answers


1. Which disease is caused by a virus?
a. Malaria
b. Whooping cough
c. Polio
d. Tania pedis

Answer: c. Polio

2. Choose the correct statement about virion:
a. Lytic phage
b. Lysogenic phage
c. The viral Capsid
d. An infectious and fully formed viral particle

Answer: d. An infectious and fully formed viral particle

3. Which is the genome of the virus?
a. DNA
b. RNA
c. DNA or RNA
d. DNA and RNA

Answer: c. DNA or RNA

4. What is the largest virus and most complex virus?
a. Mega virus Chilensis
b. Arbo virus
c. Herpes virus
d. Mumps virus

Answer: a. Mega virus Chilensis

5. The branch which deals with the study of viruses is known as:
a. Virology
b. Virustomy
c. Anatomy
d. Prology

Answer: a. Virology

6. Which of the following are the most recently discovered and least understood micro-organisms:
a. virus
b. amoeba
c. bacteria
d. prions

Answer: d. prions

7. Which of the following is a helical virus?
a. TMV
b. T4 phage
c. Pox virus
d. Herpes virus

Answer: a. TMV

8. Which of the following statement is true about viruses?
a. Free-living
b. Obligate parasites
c. All viruses are facultative parasites
d. All incorrect

Answer: b. Obligate parasites

9. Which of the following is the sub-unit of protein of Capsid?

a. Capsomeres
b. Nucleocapsid
c. Capsid
d. Prions

Answer: a. Capsomeres

10. The geometry of TMV is:
a. Rod-shaped
b. Oval shaped
c. Cuboidal shape
d. Spherical shape

Answer: a. Rod-shaped

11. Viruses that attack bacteria are known as…?
a. Virophage
b. Lysophage
c. Bacteriophage
d. None of the above

Answer: c. Bacteriophage

12. Another name for T2 phage is:
a. ss DNA Phage
b. ss RNA phage
c. ds DNA phage
d. ds RNA phage

Answer: c. ds DNA phage

13. Which virus has the smallest genome?
a. Rabies virus
b. Circovirus
c. Herpes virus
d. Mimi virus

Answer: b. Circovirus

14. Infectious RNA particles without the protein coat are known as…?
a. Prion
b. Virion
c. Viroid
d. Virosoid

Answer: c. Viroid

15. The phage which causes Lysogeny is called:
a. Lysogeny
b. temperate
c. Lytic cycles
d. Virulent phage

Answer: b. temperate

16. What do viruses require for growth?
a. Bacteria
b. Plants
c. Animals
d. Living cells

Answer: d. Living cells

17. Choose the correct statement about the tobacco mosaic virus (TMV)?
a. RNA virus
b. ss DNA or ds DNA
c. DNA virus
d. Bacteriophage

Answer: a. RNA virus

18. Viral genome inserted and integrated into the circular bacterial DNA is termed as:
a. Lysogeny
b. Virulent phage
c. Lytic cycle
d. Prophage

Answer: d. Prophage

19. Which of the following is the best disinfectant for viruses?
a. alcohol
b. bleach
c. Hydrogen peroxide
d. All of these

Answer: d. All of these

20. When a virus enters a cell but does not replicate immediately this situation is known as:
a. Lysogeny
b. Fermentation
c. Synergism
d. Symbiosis

Answer: a. Lysogeny

21. What is a virus composed of?
a. Protein coat and nucleic acid
b. Nucleic acid and cell membrane
c. Protein coat and mitochondria
d. Nucleic acid, cell wall and cell membrane

Answer: a. Protein coat and nucleic acid

22. The protein coat of viruses that enclose the genetic material is known as…?
a. Peplomers
b. Virion
c. Capsid
d. Capsomers

Answer: c. Capsid

23. Choose the correct statement about the capsomeres:
a. It is a viral protein for replication
b. It is a unit of nucleic acid in viruses
c. It is an individual unit of the capsid
d. All of these

Answer: c. It is an individual unit of the capsid

24. Choose the correct statement about the peplomeres:
a. It is a spike-like projection on the capsids
b. It is an individual unit of capsids
c. It is a projection on the viral membrane
d. It is a spike-like projection on the enveloped viruses

Answer: d. It is a spike-like projection on the enveloped viruses

25. Bacteriophages that induce bacterial cell lysis are known as…?
a. Lysogenic phages
b. Viroids
c. Virulent phages
d. Temperate phages

Answer: c. Virulent phages

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