The optimal time and temperature required for sterilization in an autoclave is___________________? A. 140°C x 2 hrs. x 10 lbs pr. B. 121°F x 15 mts. x 15 lbs pr. C. 121°F x 15 sec. x 15 lbs pr.D. 121°C…
Most antibodies are produced in the________________? A. Heart and the liver B. Brain and the meninges C. Thymus and the appendixD. Spleen and the lymph nodes
Which of the following antibacterial substance is present in eggs and saliva ? A. Lysozyme B. Secretozyme C. Albumin D. Isozyme
The major antiseptic value of soap lies in its ability to_____________? A. Kill mircobesB. Remove microbes C. Inhibit microbial growth D. Dehydrate microbial cells
Multiple drug resistance of bacteria depends on which of the following_______________? A. Resistance transfer factor (RTF) B. Colicigenic factor (Col) C. Fertility factor (F+) D. All of the above
All are not true for cultivation of anaerobic organisms except_______________? A. IncubatorB. anaerobic jar C. Refrigerator D. Centrifuge
Rideal Walker test is used to determine the efficiency of the_____________? A. Disinfectant B. Moist heat sterilisation C. Antibiotics D. Dry heat sterilization
Sterilisation is______________? A. Pathogens killed but spores are not affected B. Only pathogenic micro-organisms killed C. Non-pathogenic killedD. All pathogenic and non-pathogenic microorganisms killed
compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________? A. Time-consuming B. Less effective C. Causes instruments to rust D. Causes sharp instruments to dull
Which of the following is not a feature of anaphylaxis ? A. Delayed reaction B. Immediate reaction C. passive transfer by serum D. None of the above