961. The Ig found in exocrine secretions is_____________?
A. IgG
B. IgD
C. IgM
D. IgA
✅ The correct answer is option IgA.
Medical
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962. Physical sterilization was discovered by__________________?
A. Robert Koch
B. Joeph Lister
C. John Hunter
D. Alexander flemings
✅ The correct answer is option Joeph Lister.
963. Sclerotic bodies measuring 3-5m in size, multi-septate, chestnut, brown color is characteristic of________________?
A. Histoplasmosis
B. Rhinosporodiosis
C. Phaeohypomycosis
D. Chromoblastomycosis
✅ The correct answer is option Chromoblastomycosis.
964. Prions true is____________?
A. Readily inactivated by autoclave at 121 C
B. Evokes strong immunogenic reaction
C. Sensitive to most chemical sterilization
D. Contains DNA/ RNA
✅ The correct answer is option Readily inactivated by autoclave at 121 C.
965. All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?
A. Gram staining
B. Fermentation of mannitol and sorbital
C. Production of intracellular and extracellular adherent polysacharide
D. Colony morphology on saliva agar
✅ The correct answer is option Gram staining.
966. Antigen combining site of the antibody is____________________?
A. Idiotope
B. Paratope
C. Epitope
D. Hapten
✅ The correct answer is option Paratope.
967. Anaphylaxis refers to the________________?
A. Severe reaction following the injection of protein solution in a sensitized individual
B. Severe reaction following primary injection of Protein solutions
C. State of immunity developed by repeated injections of any foreign substance
D. Severe reaction resulting from sensitivity to common allergens
✅ The correct answer is option Severe reaction following the injection of protein solution in a sensitized individual.
968. 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 se x 15 lbs pr.
D. 121°C 15 mts. x 15 lbs pr.
✅ The correct answer is option 121°C 15 mts. x 15 lbs pr..
969. Half-life of free HIV in plasma is________________?
A. 24 hours
B. 6 hours
C. 12 hours
D. 3 months
✅ The correct answer is option 6 hours.
970. The term epitope refers to________________?
A. complete antigen molecule
B. Hapten
C. Immunogen
D. Smallest antigenic determinant
✅ The correct answer is option Smallest antigenic determinant.