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[A] : AIDS virus is highly mutable [R...

[A] : AIDS virus is highly mutable
[R] : It lacks DNA polymerase to repair its mutated genome

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

[A] : Infective part of virus is its nucleic acid . [R] : During infection , only the nucleic acid of virus enters in to the host cell .

[A] : AIDS is called death warrant . [R] : AIDS virus has a liking for T-lymphocytes which produce antibodies .

[A]: Polymerase chain reaction (PCR) fol- lowed by DNA probe is used during DNA fin- ger printing. [R]: A DNA finger print is inherited and, there- fore, resembles that of parent

[A]: Heritable changes are also called mutations. [R]: Mutations are sudden change in chromosomal DNA.

What type of virus causes AIDS?Name its genetic material.

A polypeptide has the following amino acid sequence Met-Ser-Pro-Arg-Leu-Glu-Gly In a mutant the amino acid sequence of this polypeptide was found to be Met-Ser-Ser-Arg-Leu-Glu-Gly What is the type of mutation that occurred in the reading frame of its DNA?

TRUEMAN BIOLOGY-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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