Gram positive bacteria appear_______________?

Related Mcqs:

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

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

   Submitted by: Maryam Aftab

2. The liquid that escapes during defrosting frozen meat contains _____ bacteria?

   A. Campylobacter
   B. Nitrobacter
   C. Azobacter
   D. Salmonella

3. Who first separated bacteria from other protists as a group_____________?

   A. John Hogg
   B. Ernst Haeckel
   C. Margulis and Schwartz
   D. Herbert Copeland

4. The word Archaeobacteria (a division of bacteria) derived from Greek means___________?

   A. True bacteria
   B. False bacteria
   C. Recent bacteria
   D. Ancient bacteria

5. Who coined the term Animalcules for microorganisms like Bacteria and protozoa______________?

   A. Robert Koch
   B. Louis Pasteur
   C. Alexander Fleming
   D. Leeuwenhoek

6. Which of the following bacteria are thick rigid and spiral______________?

   A. Vibrio
   B. Spirillum
   C. Spirochete
   D. Coccus

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

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

8. Example of bacteria requiring low concentration of oxygen is__________?

   A. Campylobactor
   B. spirocheta
   C. E-coli
   D. Pseudomonas

9. Which of the following structure primarily helps in attachment of bacteria on various surfaces____________?

   A. Flagella
   B. Pili
   C. Both of these
   D. None of these

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

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

    Submitted by: Maria Aziz