Entry Test MCQ :: The Variety of Life
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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 |
Answer: Option C
Explanation:
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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: |
Answer: Option C
Explanation:
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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 |
Answer: Option B
Explanation:
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24. |
The agent of controversial nature causing mad cow infection is: |
A. |
Bacteria |
B. |
Cowpox Virus |
C. |
Adenovirus |
D. |
Prion |
Answer: Option D
Explanation:
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25. |
A virion is : |
A. |
Virus |
B. |
Viral protein |
C. |
Viral lysozyme |
D. |
Viral gene |
Answer: Option A
Explanation:
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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 |
Answer: Option B
Explanation:
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27. |
Bacteriopahage that infect E. coli are called: |
Answer: Option C
Explanation:
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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 |
Answer: Option B
Explanation:
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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 |
Answer: Option D
Explanation:
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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. |
Answer: Option C
Explanation:
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