Nitrifying bacteria are the examples of___________?

Related Mcqs:

1. Purple non-sulphur bacteria is an example of___________?

   A. Heterotrophic bacteria
   B. Chemosynthetic bacteria
   C. Photosynthetic bacteria
   D. Saprotrophic bacteria

2. On wound __________ fight foreign particles, like bacteria?

   A. White Blood cells
   B. Red Blood Cells
   C. Platelets
   D. Plasma

3. The word which E-Chatton suggested for bacteria and blue green algae was_____________?

   A. Autotrophs
   B. Heterotrophs
   C. Pro-cariotique
   D. Eu-cariotique

4. Viruses are __________ smaller than bacteria?

   A. 10 – 100 times
   B. 10 – 1000 times
   C. 100 – 1000 times
   D. 1000 – 10000 times

5. Nodules on roots of leguminous plants have __________ bacteria?

   A. Anaerobic
   B. Nitrogen fixing
   C. Nitrifying
   D. Ammonifying

6. Approximately _____ species of bacteria are known to cause diseases in humans.

   A. 100
   B. 200
   C. 300
   D. 400

7. Some bacteria ranging occasionally a size of 500 ?m in length are___________________?

   A. Escherichia coli
   B. Spirochetes
   C. Mycoplasma
   D. Epulopiscuim

8. Those bacteria which are fully dependent upon their host for nutrition are called__________?

   A. Heterotrophic bacteria
   B. Chemosynthetic bacteria
   C. Saprophytic bacteria
   D. Parasitic bacteria

9. Gram +ve bacteria on treatment with crystal violet dye give _________colour?

   A. red
   B. green
   C. purple
   D. pink

   Submitted by: Maryam Aftab

10. Bacteria protect themselves from viruses by fragmenting viral DNA with ____________?

    A. Ligase
    B. Endonuclease
    C. Exonuclease
    D. Gyrase

    Submitted by: Maria Aziz