MCQ Microbiology (Bacteria and Gram Staining) with answer key Part- 12

                                               Microbiology MCQ (Quiz-12)  

Bacteria and Gram Staining

Multiple choice questions with answer key

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

AS PER PCI SYLLABUS

1. The interval period between HIV infection and appearance of antibodies in serum is called

  A) Window period  
B) Intrinsic period
C) Incubation period
D) None of these

... Answer is : A) Window period

2. Confirmatory test for AIDS is

A) Karpas test
B) Fujerbio test
C) ELISA test
D) Western blot test

... Answer is : D) Western blot test

3. During AIDS, HIV infects

A) CD2 lymphocytes
B) CD3 lymphocytes
C) CD4 lymphocytes
D) Blymphocytes

... Answer is : C) CD4 lymphocytes

4. Those fungi which do not have a sexual stage are classified as

A) Fungi imperfecti
B) Basidiomycetes
C) Phycomycetes
D) Ascomycetes

... Answer is : A) Fungi imperfecti

5. Diagnosis of bacterial disease can be made by

A) Isolation of bacteria by culture from exudates or blood
B) Finding bacteria in pathological fluids
C) Both
D) None of above

... Answer is : C) Finding bacteria in pathological fluids

6. Cholera occurs in _______ form .

A) Sporadic
B) Epidemic
C) Endemic
D) All of the above

... Answer is : D) All of the above

7. A man is usually infected for tick typhus by

A) Inhaling infected dust
B) Tending cattle
C) Drinking milk of sick animals
D) All of these

... Answer is : A) Inhaling infected dust

8. Ziehl – Neelson stain is a ______.

A) Counter stain
B) Differential stain
C) Simple stain
D) None of the above

... Answer is : B) Differential stain

9. Organism resistant to degradative lysosomal enzymes includes

A) Legionella pneumophila
B) M.leprae
C) Both A and B
D) M.tuberculosis

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

10. The properties common to Gram positive and negative cell walls are

A) Rigid peptoglycon activity
B) Greater resistance to drying than vegetative cell.
C) Equal susceptibility to hydrolysis by lysozyme
D) Peptide crosslinks between polysaccharides

... Answer is : B) Greater resistance to drying than vegetative cell.

11. Which of the following is the most specific in diagnosis of AIDS?

A) ELISA
B) IHA
C) Immuno electrophoresis
D) Western blot

... Answer is : D) Western blot

12. Screening test for AIDS is

A) VDRL test
B) Western blot test
C) ELISA test
D) Both A and C

... Answer is : C) ELISA test

13. The most common infection in AIDS is

A) Pnemocystis carnii
B) LGV
C) Syphilis
D) CMV

... Answer is : A) Pnemocystis carnii

14. Lab diagnosis of Leishmaniasis is done by

A) Blood culture
B) CFT
C) Peripheral smear
D) All of these

... Answer is : D) All of these

15. Tinea capitis is

A) Ring worm of non-hairy skin of body
B) Ring worm of scalp
C) Ring worm of the foot
D) Both A and B

... Answer is : A) Ring worm of non-hairy skin of body

16. Staphylococcus aureus are characterized by

A) Staphylococcus aureus are characterized by
B) Formation of acid in sucrose, dextrose
C) Liquification of gelatin due to production of gelatinase
D) All of the above

... Answer is : A) Staphylococcus aureus are characterized by

17. Endemic typhus is caused by

A) R.prowazekii
B) None of these
C) R.quintana
D) R.mooseri

... Answer is : D) R.mooseri

18. In Gram positive bacteria, ratio of RNA to DNA is

A) 1 : 2
B) Almost equal
C) 8 : 1
D) None of the above

... Answer is : C) 8 : 1

19. Wet mount slide preparations are used in microbiology as they allow to see

A) Size and shape of individual organisms
B) Characteristic arrangement or grouping of cells
C) Motility of the organism
D) All of these

... Answer is : D) All of these

20. Freeze-etch particles (used in preparing cell for electron microscopy) can be located in the

A) Cell membrane
B) Cytoplasm
C) Nucleus
D) Cell wall

... Answer is : A) Cell membrane