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.Management Sciences
Category: Microbiology
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
The following are applicable to bacterial genoms except________________?
A. It is composed of DNA
B. It doe not contain histones
C. It is circular
D. Its DNA has both introns and extrons
Which of the following is most potent antigen for stimulating both humoral and cell mediated immunity ?
A. Adjuvant
B. Proteins
C. Polysaccharides
D. Lipids
Spores are disinfected by_______________?
A. Glutaraldehyde
B. Betapropiolactone
C. Formaldehyde
D. Hexachlorophen
E. Both A & C
Immunoglobulin consists of________________?
A. 2 light, 2 heavy chains
B. 1 heavy, 2 light chains
C. 1 light, 1 heavy chain
D. 3 light, 1 heavy chain
Leptospirosis, all are true except______________?
A. Faeces & urine of rodents is the cause
B. Onset of IgM in 2 days
C. Incubation period is 10 days
D. It is sensitive to penicillin
The virus which causes Aplastic anemia in chronic hemolytic disease is_______________?
A. Adeno
B. Hepatitis
C. EB virus
D. Parvo virus
Dental Plaque adheres to tooth surface by________________?
A. Dextran
B. Epithelial cells
C. Bacteria
D. Sucrose
Which of the following is not true of boiling water_____________?
A. It can kill hepatitis B virus
B. Used for sterilizing surgical instruments
C. Can kill mycobacterium tuberculosis
D. Can kill vegetative bacterial cells
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