The bacterial resistance to tetracycline is due to___________?

Related Mcqs:

1. Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?

   A. Capsule
   B. Flagella
   C. Pili
   D. Mesosomes

2. Tetracycline is contraindicated in_____________?

   A. Children
   B. Pregnancy
   C. Renal failure
   D. All of the above

3. Tetracycline is more preferred in periodontics because______________?

   A. It is broad spectrum antibiotic
   B. It has anticollagenolytic effect
   C. All of the above
   D. None of the above

4. Tetracycline in children causes____________?

   A. Calcification
   B. Missing teeth
   C. Discolored teeth
   D. Peg teeth

5. Tetracycline chelates with______________?

   A. Ca salts
   B. Mg salts
   C. All salts
   D. All of the above

6. Which of the following is a characteristic of tetracycline stains ?

   A. There is less deposition in dentine as compared to enamel
   B. Is always accompanied by hypolastic defects
   C. Stains are dark brown in color
   D. Stained teeth fluoresce light yellow under U.V light

7. Tetracycline when given to pregnant woman can cause_______________?

   A. Acute hepatic necrosis
   B. Discoloration/ staining of hard structures of foetus
   C. Increased intracranial pressure in infant
   D. All of the above

8. Colour of teeth stained by tetracycline appear _________ under UV light?

   A. Red
   B. Green
   C. Yellow
   D. Brown

9. Tetracycline acts on______________?

   A. 30S ribosomes
   B. 50S ribosomes
   C. Cell membrane
   D. Inhibiting DNA gyrase

10. A diffuse spreading inflammatory lesion is due to bacterial enzyme

    A. Coagulase
    B. Hyaluronidase
    C. Peroxidase
    D. Bradykinin