Microbiology MCQ (Quiz-7)  

Bacteria and Gram Staining

Multiple choice questions with answer key

S. Y. B. PHARM Sem - III  (UNIT - 2)  

AS PER PCI SYLLABUS






1. Bacterial locomotion is accomplished by
      A) Cytoskeleton


... Answer is : D) Both B and C


2. The motile bacteria is




... Answer is : B) Salmonella typhi

3. Metachromatic granules are chemically composed of





... Answer is : B) Polymeta phosphates

4. Bacteria multiply by




... Answer is : D) Simple binary fission


5. Endospores can be stained with




... Answer is : A) Malachite green

6. The order of stains in Gram-staining procedure is .




... Answer is : D) Crystal violet, Iodine solution, Alcohol, Saffranine

7. Gram positive bacteria appear as




... Answer is : C) Violet

8. The action of alcohol during Gram-staining is





... Answer is : A) Decolorises the cells


9. Cell-wall is





... Answer is : c) Thick in Gram positive than Gram negative

10. Rickettsiae stained by this technique responds as




... Answer is : A) Gram negative

11. Fimbriae are demonstrated by




... Answer is : B) Haemaggulation test


12.Following cocci are non-motile except




... Answer is : A) Rhodococcus agilis

13. Metachromatic granules can be stained with




... Answer is : C) Methylene blue


14. Bacterial spores are




... Answer is : C) Weakly acid fast

15. The following bacteria produce pigment, except




... Answer is : D) D. pneumoniae


16. The percentage of alcohol used in Gram-staining is




... Answer is : C) 90%

17. Gram negative bacteria appear as




... Answer is : D) Pink


18. Lipid contents is more in




... Answer is : B) Gram negative bacteria

19. The Lipid content present in Gram positive bacterial cell-wall is




... Answer is : C) 1-5 %


20. Rickettsiae stained by this technique responds as




... Answer is : A) Gram negative