Biology Chapter 1 Entry test MCQs
Topic no.1:
Discovery of Viruses
1. The filterable agents were first purified in 1935, when Stanley was successful in crystallizing the…………….
a. Hepatitis virus
b. Polio virus
c. Influenza virus
d. Tobacco mosaic virus
2. Tobacco mosaic virus was discovered by:
a. Iwanowsky
b. Stanley
c. D’ Herelle
d. Pasteur
Characters of Viruses
3. Viruses cannot replicate in:
a. A plant cell
b. Blood Plasma
c. Hepatocytes
d. Skin cell
4. Members of which of the following group are all parasites?
a. Bacteria
b. Viruses
c. Protozoa
d. Fungi
5. Volume of bacteriophage is about…….. of host.
a. 1/100
b. 1/10
c. 1/1000
d. 1/100 times
6. It is true for viruses:
a. No independent metabolic activities
b. Viruses contain either DNA and RNA
c. Tiny and infectious agent
d. Viruses are non-cellular
7. Viruses cannot be grown on artificial culture media because they are:
a. Obligate intracellular parasites
b. Facultative parasites
c. . Ectoparasites
d. Endoparasites
8. Cilia and flagella are absent in:
a. Bacteria
b. Viruses
c. Lower animals
d. Lower plants
9. Virus can only survive and reproduce inside a:
a. Living cells
b. Animal cells
c. Non-living cells
d. Bacterial cells
10. Which one of the following is double stranded virus?
a. Reovirus
b. Poxvirus
c. Togavirus
d. Parvovirus
11. HIV is classified as:
a. Oncovirus
b. Bacteriophage
c. Icosahedral virus
d. Retrovirus
12. The genome of influenza virus is made up of:
a. Single stranded DNA
b. Single stranded RNA
c. Double stranded RNA
d. Double stranded DNA
13. Polio viruses are:
a. Spherical viruses
b. Tadpole shaped
c. Spring like
d. Rod shaped viruses
14. TMV are:
a. Helical shaped
b. Tadpole shaped
c. Spherical viruses
d. Rod shaped viruses
15. Which one is not RNA virus?
a. Influenza virus
b. Small pox, virus
c. Polio virus
d. Mumps and Measles virus
Structure of Viruses
16. Which of the following is composed of nucleic acids only?
a. Viroid
b. Virus
c. Prion
d. Virion
17. In prions, Information is carried further through:
a. Proteins
b. DNA
c. Glycoproteins
d. RNA
18. It is present in all the viruses:
a. Capsid
b. DNA
c. Envelop
d. RNA
19. The component responsible for determination of shape of virus is:
a. Type of hosts
b. Type of nucleic acids
c. Viral envelope
d. Protein subunits
20. Which of the following is not essential part of virus?
a. Envelope
b. Nucleic acid
c. Capsid
d. None of these
21. A virion is a:
a. Viral lysozyme
b. Virus
c. Viral gene
d. Capsid
22. …………….capsomeres are present in capsid of herpes virus.
a. 252
b. 152
c. 262
d. 162
23. The genome of most of the animal viruses contain:
a. DNA
b. Protein
c. RNA
d. Both DNA and RNA
24. In viruses, a combined structure formed by core (Nucleic Acid) and capsid is:
a. Envelope
b. Nucleocapsid
c. Prions
d. Capsomeres
25. Capsid, the protective coat of a virus is made up of subunits known as capsomeres that are………in nature.
a. Protein
b. Lipid
c. DNA
d. RNA