The conditions for autoclaving that can sterilize (except for prions) are: A. 12

Question

The conditions for autoclaving that can sterilize (except for prions) are: A. 121 degree F for 20 min, 15 psi B. 121 degree C for 20 min, 15 psi C. 200 degree F for 25 min, 15 psi D. 100 degree for 1 hour, 1 psi E. 100 degree c for 10 min, 1 psi E coli lives in the large intestine and produces vitamin k for the host, what type of relationship is this? A. Commensalistic relationship B. parasitic relationship C. synergistic relationship D. antagonistic relationship E. mutualistic relationship Which of the following antibiotic inhibits cell wall synthesis? A. Doxycycline B. chloramphenicol C. erythomycin D. ampeillin E. tonofolate The best way to remove bacteria from a heat-sensitive solution (such as patient serum sample) is: A. autoclaving B. irradiate with UV light C. add formalin to the sample D. filter it thought a sterile 2.0 mu m filter E. filter it through a sterile 1.0 mm filter which of the following CANNOT be used as skin antiseptic? A. formalin B. chlorohexiidne gluconate C. silver nitrate D. iodine E. mercury iodine (Hgl_6) Which of the following does NOT inhibit portein synthesis? A. chloramphericol B. crythromycin C. aminoglycosides D. tetracycline E. ciprofloxacin Which of the following may turn your urine orange? A. chloramphenicol B. crythromycin c. rifampin D. penicillin E. aminoglycosides which of the following does NOT inhibit cell wall synthesis? A. rifampin B. bacitracin C. cephalosporin D. vancomycin E. ampicillins

Explanation / Answer

16 Ans. The standard conditions autoclaving are 121oC for 20 minutes 15 psi (except for prions). Autoclave at 134°C for 18 minutes is for prions.

17 Ans. It's a Mutualistic relationship. As the human body provides E. coli with a safe living environment to receive the necessary nutrients for reproduction and growth. E. coli, in turn, makes it possible for humans to absorb vital nutrients, including Vitamin K, through the colon.

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