Entry Test MCQ :: The Variety of Life

NOTE :ANSWERS ARE PRESENT AFTER 5 MCQs

21.	Which of the statement about viruses is incorrect :
	A. We can not grow them in laboratories on artificial medias B. They are obligate intracellular parasite. C. They can synthesize their nucleic acid D. They are resistant to most of antibiotic treatment

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22.	Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is:
	A. 100 B. 152 C. 162 D. 172

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23.	Protein coat the capsid of adenovirus is :
	A. Surrounded by genome B. Surrounding genome C. Surrounding the envelope D. Both B and C

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24.	The agent of controversial nature causing mad cow infection is:
	A. Bacteria B. Cowpox Virus C. Adenovirus D. Prion

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25.	A virion is :
	A. Virus B. Viral protein C. Viral lysozyme D. Viral gene

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26.	An isolated virus is not considered living since it:
	A. Separates in to two inner parts B. Can not metabolize C. Rapidly looses its Genome chemical inert D. Is coated with an air tight shield

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27.	Bacteriopahage that infect E. coli are called:
	A. M type B. N type C. T type D. S type

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28.	Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves:
	A. Strong covalent bond between virion and the receptor site. B. Week chemical unior between them C. Both A and B depending upon the phage D. None of these

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29.	In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall:
	A. Absorption B. Multiplication C. Lysogeny D. Penetration

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30.	Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage:
	A. Phage when gets incorporated with the bacterial chromosome is called prophage. B. The bacterium continues to live and reproduce normally C. Lysogenic bacteria may get infected by the related phage. D. The cycle may convert into lytic type resulting from environmental exposure.

31.	In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called:
	A. Lysis B. Lysogeny C. Induction D. Adsorption

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32.	In the lytic cycle of bacteriophage the host DNA is:
	A. Replicated B. Turn off by the protein coat. C. Digested into its nucleotides D. Turned on by the removal of the protein coat

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33.	In the Lysogenic cycle the DNA of the bacteriophage:
	A. Joins the bacterial chromosomes. B. Attaches to the inner surface of the host membrane C. Is immediately degraded when enters the host. D. Goes directly to host ribosomes for translation

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34.	Temperate phage may exist as :
	A. Prophage B. Capsid C. Viron D. Retrovirus

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35.	Tobacco mosaic virus is :
	A. Spherical B. Rod Shaped C. Tadpole like D. Hexagonal

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36.	Which of the following is an RNA virus:
	A. Influenza virus B. Herpes virus C. HBV D. Pox virus

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37.	Which of the following disease results in Paralysis due to viral attack on C.N.S:
	A. Measles B. Herpes simplex C. Hepatitis D. Polio

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38.	An enzyme which can convert single stranded RNA into double stranded viral DNA is called:
	A. DNAase B. RNAase C. DNA polymrase D. Reverse Transcriptase

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39.	Which of the following virus has special affiliations with the tumor production:
	A. Hepatitis virus B. Retrovirus C. Polio virus D. Pox virus

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40.	Which of the following is the smallest known virus:
	A. Hepatitis virus B. Retrovirus C. Polio virus D. Pox virus