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General Knowledge :: Biology

  1. Who discovered the insecticidal properties of DDT?

  2. A.

     Othmanzedicer

    B.

     R.H. Painter

    C.

     Paul Muller

    D.

     Rachel Carson


  3. There is no bacteria activity in which of the following process?

  4. A.

     Sewage disposal

    B.

     Tanning of leather

    C.

     Ripening of cheese

    D.

     Preparation of sillage


  5. ________ reproduces by binary fission.

  6. A.

     Amoeba

    B.

     Liverfiuke

    C.

     Plasmodium

    D.

     Planaria


  7. The DNA of the bacterium is found present in a distinct nuclear region called

  8. A.

     Nucleolus

    B.

     Centrosome

    C.

     Nucleoid

    D.

     Nucleus


  9. In autotrophic bacteria, where is chlorophyll located?

  10. A.

     In the nucleoid

    B.

     In the infolded plasma membrane

    C.

     In the ribosomes

    D.

     In chloroplast membranes


  11. Bacteria were first discovered by

  12. A.

     Robert Koch

    B.

     Robert Hooke

    C.

     Louis Pasteur

    D.

     A.V.Leeuwenhoek


  13. Among the many substances manufactured commercially by means of ________ are acetic acid, acetone, butanol, lactic acid and several vitamins.

  14. A.

     Viruses

    B.

     Bacteria

    C.

     Fungi

    D.

     Yeast


  15. In fungi asexual reproduction occurs mostly by

  16. A.

     Fragmentation

    B.

     Budding

    C.

     Spore formation

    D.

     All of these


  17. Amoeba belongs to the phylum

  18. A.

     Protozoa

    B.

     Annelida

    C.

     Porifera

    D.

     Platyhelminthes


  19. Dried milk dried meat are examples of preservation by

  20. A.

     Pasteurization

    B.

     Dehydration

    C.

     Strerilization

    D.

     None of the above