All are not true for cultivation of anaerobic organisms except_______________?
A. Incubator
B. anaerobic jar
C. Refrigerator
D. Centrifuge
Microbiology
Rideal Walker test is used to determine the efficiency of the_____________?
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______________?
Sterilisation is______________?
A. Pathogens killed but spores are not affected
B. Only pathogenic micro-organisms killed
C. Non-pathogenic killed
D. All pathogenic and non-pathogenic microorganisms killed
compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?
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 ?
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
Bacterial spores are destroyed by_______________?
Bacterial spores are destroyed by_______________?
A. Boiling at 100°C
B. Disinfection by hypochlorite solution
C. Autoclave
D. Pasteurisation
The Ig found in exocrine secretions is_____________?
The Ig found in exocrine secretions is_____________?
A. IgG
B. IgD
C. IgM
D. IgA
The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________?
The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________?
A. Lysosomes
B. Proteolytic enzymes
C. Lymphotoxins
D. Vasoactive mediators
Dark ground microscopy is useful to identify______________?
Dark ground microscopy is useful to identify______________?
A. Mycoplasma
B. Chlamydiae
C. Rickettsiae
D. Spirochaetes
The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________?
The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________?
A. 3 minutes
B. 15 minutes
C. 30 minutes
D. 60 minutes