Home
Class 12
BIOLOGY
[A] : AIDS virus is highly mutable [R...

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

A

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

B

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

C

(c) If A is true and R is false

D

(d) If both A and R are false

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • TRANSPORT IN PLANTS

    TRUEMEN BIOLOGY ENGLISH|Exercise Multiple Choice Questions|192 Videos

Similar Questions

Explore conceptually related problems

[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 .

Assertion :- Beside high rate of polymerization of nucleotides DNA polymerase have to catalyze the reaction with high degree of accuracy. Reason : Any mistake during replication would results into mutations.

Select the incorrect statements regarding AIDS from the following: I. AIDS is caused by a retrovirus have two molecules of single-stranded RNA as its genome. II. AIDS can be successfully treated using anti-retroviral drugs III. Macrophages act as a viral factory as it leads to the continuous production of new viral particles. IV. In AIDS, a decrease in B-lymphocyte count is seen.

Select the correct set of statements for the virus first crytallised by Stanley. (a) It has either single or double standard DNA as its genetic material (b) Subunits of their protein coat are arranged helically (c) It is an obligate plant parasite. (d) First discovered by M.W. Beijerinck

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

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |