MCQ Microbiology (Bacteria and Gram Staining) with answer key Part- 13

 

Microbiology MCQ (Quiz-13)  

Bacteria and Gram Staining

Multiple choice questions with answer key

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

AS PER PCI SYLLABUS

1. The main difference in true bacteria and mycoplasma is that it does not posses

  A) ATP synthesis  
B) A capsule
C) Flagella
D) Cell wall

... Answer is : D) Cell wall

2. Mycoplasmas differ from Chalamy-diae in that, it

A) Lack of at rue bacterial cell wall
B) susceptible to penicillin
C) has ability to cause urinary tract infection
D) None of these

... Answer is : A) Lack of a true bacterial cell wall

3. Fungi differs with bacteria in that it

A) Have nuclear membranes
B) Contain no peptidoglycan
C) Susceptible to griseofulvin
D) All of the above

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

4. The largest protozoa is

A) Entamoeba coli
B) Toxoplasma gondii
C) Balantidium coli
D) Trichomonus vaginalis

... Answer is : C) Balantidium coli

5. Which of the following vaccine contains attenuated form of bacteria?

A) Polio
B) TAB
C) Cholera
D) BCG

... Answer is : D) BCG

6. Techoic acid is .

A) Provide receptors for phages
B) Influence the permeability of the membrane
C) Found in the walls of Gram positive bacteria
D) Make up outer wall of Gram negative bacteria

... Answer is : C) Found in the walls of Gram positive bacteria

7. What is the function of bacterial capsule?

A) Helps in adherence of bacteria to surface in its environment
B) Production of organism from phagocytosis
C) Both A and B
D) None of these

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

8. Which of the following are acid fast structures?

A) Bacterial spores
B) Nocardia
C) Mycobacteria
D) All of these

... Answer is : D) All of these

9. All of the following are energy source of bacteria except

A) Absorption of heat
B) Utilisation of visible light
C) Oxidation of inorganic compounds
D) Oxidation of organic compounds

... Answer is : A) Absorption of heat

10. Streptococci which are destroyed at 60°C for 30 minutes

A) Strepto viridans
B) Strepto hemolyticus
C) Preptostreptococci
D) All of these

... Answer is : D) All of these

11.The organism responsible for retarding penetration of host cell by an inhibitor of ATP synthesis.

A) Rickettsia rickettsii
B) Chlamydia trachomatis
C) M.pneumoniae
D) Chlamydia psitacci

... Answer is : A) Rickettsia rickettsii

12. Fungal disease in human is caused by

A) Contamination of wounds with conidia or myceliat fragments
B) Inhalation of conidia
C) Invasion of mucous membrane
D) All of these

... Answer is : D) All of these

13. A polysaccharide capsule is present on cryptococci which

A) Is an aid to diagnose
B) Cross reacts with rheumatoid factor
C) Inhibits phagocytosis
D) All of these

... Answer is : C) Inhibits phagocytosis

14. Premunition is particularly seen in

A) Ascaris
B) Plasmodium
C) Giardia
D) Both A and C

... Answer is : B) Plasmodium

15. The bacteria, which is motile at 22 oC but non-motile at 37 oC is

A) Transduction
B) Conjugation
C) Tranformation
D) Cell fusion

... Answer is : D) Cell fusion

16. One flagelium at one end of the organ is called

A) Iophotrichate
B) Amphitrichate
C) Monotrichate
D) Peritrichate

... Answer is : C) Monotrichate

17. Which of the following is the charachter-istic of bacterial spore?

A) Sensitive to formaldehyde
B) Highly refractile
C) Usually dehydrated
D) All of these

... Answer is : D) All of these

18. All of the following are acid fast structures except

A) Bacterium spores
B) Exoskeleton
C) Clostridium
D) None of these

... Answer is : C) Clostridium

19. Identify the obligate anaerobes

A) Cl. tetani
B) Sarcinae
C) Vibrio cholera
D) Salmonella

... Answer is : A) Cl. tetani

20. Toxins or enzymes which are not produced by streptococcus pyrogens

A) Phosphate
B) Streptokinase
C) Hyaluronides
D) Hemolysin

... Answer is : A) Phosphate