Medical Mcqs

Roxithromycin is______________?
  • (A)  A long acting macrolide
  • (B)  Short action quinolone
  • (C)  Short acting macrolide
  • (D)  Long acting polypeptide
Tetracyclines act by__________________?
  • (A)  Inhibiting the binding of aminoacyl tRNA to the ribosomal complex
  • (B)  Inhibiting peptidyl transferase
  • (C)  Inactivating elongation factors
  • (D)  Causing misreading of mRNA
While performing a procedure, a resident doctor injures herself with a suture needle that has been used to stitch a patient with HIV infection for 11 years. He has been complaint with therapy for several years and has recently changed tablets because of alteration in his appearance. His last CD4 count was 360 cells/mm. The doctor is offered post exposure prophylaxis. Which regimen should she take ?
  • (A)  Ziduvidine and Lamivudine
  • (B)  Ziduvidine and Lamivudine and Indivair
  • (C)  Ziduvidine and Lamivudine and Stavudine
  • (D)  Ziduvidine and Lamivudine and Abacavir
Not true about PnG is______________?
  • (A)  Destroyed by gastic acid
  • (B)  Very active against sensitive gram positive coci
  • (C)  Used for treatment of meningococcal meningitis
  • (D)  More concentrated in prostatic secretion and intraocular fluids