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.Management Sciences
Category: General Microbiology
Hot air oven is used for sterilization of all EXCEPT__________________?
A. Glassware
B. Rubber tubes
C. Sharp instrument
D. Liquid paraffin
Sterilization is a process in which_________________?
A. Kill all pathogenic micro-organisms
B. Kill all non-pathogenic micro-organisms in the environment
C. Deactivate all pathogens not spores
D. Deactivate all spores and dill pathogenic organism
By using phase contrast microscope_______________?
A. Internal structures are differentiated in living cells
B. Internal structures are differentiated in dead cells
C. Internal metabolic activities can be observed
D. External capsule formation can be observed
Graft versus host reaction is caused by_________________?
A. B-Lymphocytes
B. T-lymphocytes
C. Monocytes
D. Leukocytes
Out of the following hypersensitivity reactions, in which type a single dose of the antigen can act as both the sensitizing and shocking dose_______________?
A. Anaphylaxis
B. Arthus reaction
C. Serum sickness
D. Contact dermatitis
Phase contrast microscopy is based on principle of__________________?
A. Different refractive indices of object
B. Different reflective indices of object
C. Light scattering
D. Light attenuation
Stain used to make the wetted area of filter paper strip more visible is_____________?
A. Eosin stain
B. Haemotoxin stain
C. Ninhydrin stain
D. Blue stain
Which of the following organisms are arranged in cubical packets of eight cocci________________?
A. Staphylococcus
B. Micrococcus
C. Sarcina
D. Aerococcus
Detergents used to disinfect dental instruments in the office kill bacteria by interfering with functional of the cell______________?
A. wall
B. nucleus
C. membrane
D. Capsule
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