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[A] : All RNA viruses cannot directly mu...

[A] : All RNA viruses cannot directly multiply in host cells .
[R] : RNA viruses need reverse transcriptase to synthesize RNA only .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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Which of the following viruses is capable of synthesizing RNA over RNA

[A] : Viruses usually have only one nucleic acid either DNA or RNA . [R] : Small viruses can be crystallized .

Which of the following viruses is capable of synthesising RNA over RNA?

A; Viruses are not an exception to all theory R: viruses are acellular and have no cell machinery

RNA containing viruses are called as

[A] : Viruses are obligate parasites . [R] : Both DNA and RNA are present in a virus .

[A] : Viruses are obligate parasites . [R] : Viruses can not multiply outside the host .

If a cell lacks RNA polymerase III, then it cannot synthesize

Enzyme which can synthesize DNA from RNA is (a) Reverse transcriptase (b) DNA polymerase (c) Protease (d) Integrase

State any one reason to explain why RNA viruses mutate and evolve faster than other viruses

TRUEMEN BIOLOGY ENGLISH-Viruses -ASSERTION AND REASON
  1. [A] : Viruses are not included in any kingdom of classification . [R...

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  2. [A] : Viruses are easily killed by strong broad spectrum antibiotics ....

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  3. [A] : Outside the host , viruses do not survive . [R] : Viruses are ...

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  4. [A] : AIDS virus is highly mutable [R] : It lacks DNA polymerase to...

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  5. [A] : Infective part of virus is its nucleic acid . [R] : During inf...

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  6. [A] : Viruses are exception to cell theory . [R] : Viruses don't hav...

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  7. [A] : SARS Originated in China . [R] : China is most crowded country...

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  8. [A] : Bluebird is a disease of poultry of humans . [R] : Bludbird is...

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  9. [A] : Viruses are not considered organisms . [R] : Viruses lack cyto...

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  10. [A] : Viruses lack any kind of enzymatic machinery . [R] : They can ...

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  11. [A] : Viruses are causative organisms of measles and rabies . [R] : ...

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  12. [A] : Viruses are not considered organisms . [R] : Viruses are mere...

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  13. [A] : All RNA viruses cannot directly multiply in host cells . [R] :...

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  14. [A] : Some viruses cause cancer . [R] : Cancer viruses trigger uncon...

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  15. [A] : Viruses are obligate parasites . [R] : Both DNA and RNA are pr...

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  16. [A] : Subviral infectious agents are called viroids . [R] : Viroids ...

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  17. [A] : The Phages which caused lysis of bacterial cell are called virul...

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  18. [A] : AIDS is called death warrant . [R] : AIDS virus has a liking f...

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  19. [A] : Virion is the virus particle outside the host cell. [R] : They...

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  20. [A] : Virus free plants can be produced from virus infected plants by ...

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