The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?

Related Mcqs:

1. For a bacterium to be seriously considered in the etiology of dental caries, it must______________?

   A. Exist regularly in the dental plaque B. Produce extracellular amylopectins C. Be lethal for gnotobiotic animals D. Produce intracellular dextrans...

2. Ability of an orthodontic wire to spring back to its original shape is evaluated by_____________?

   A. Brittleness B. Resilience C. Tensile strength D. Toughness...

3. An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics which of the following organisms is it likely to be ?

   A. Escherichia coli B. Klebsiella pnemoniae C. Proteus miribilis D. Pseudomonas aeruginosa...

4. A diabetic patient developed cellulitis due to staphylococcus aureus, which was found to be Methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate EXCEPT________________?

   A. Vancomycin B. Imipenem C. Teichoplanin D. Linezolid...

5. Which of the following antibiotics is effective in treating oral candidiasis ?

   A. Nystatin B. Bacitracin C. Penicillin D. Tetracycline...

6. Traces of which of the antibiotics can be found in the gingival fluid after administration___________?

   A. Tetracycline B. Lincomycin C. Clindamyclin D. Penicillin G...

7. IF a bacteria were susceptible to both penicillin and Erythromycin, then it would not be appropriate to treat the patients with both antibiotics at the same time because_______________?

   A. Penicillin is inactivated by erythromycin B. Erythromycin exerts its effects extracellularly C. Erythromycin enhances the B-lactamases activity D. Penicillin is only effective against growing cells...

8. When broad spectrum antibiotics are administered with coumarin anticoagulants, the anticoagulant action may be____________?

   A. Reduced because of enhanced hepatic drug metabolism B. Reduced because of increased protein binding C. Increased because of reduction of vitamin sources D. Increase because of decrease renal excretion of the anticoagulant...

9. Which of the following antibiotics is most frequently associated with pseudomembranous colitis ?

   A. Ampicillin B. Penicillin C. Clindamycin D. Cephalosporin...

10. Prolonged administrator of broad spectrum antibiotics results in the formation of_______________?

    A. Black hairy tongue B. Median rhomboid glossitis C. Geographic tongue D. Fissured tongue...