1051. Dry heat destroys microorganisms by_____________?
A. Lysis
B. Oxidation
C. Hydrolysis of DNA
D. Coagulation of proteins
✅ The correct answer is option Oxidation.
Medical
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1052. All are true about legionella pneumophilia except______________?
A. Aquatic bodies are main habitat
B. It can replicate in amoeba
C. Urine test is a reliable method
D. Person to person transmission
✅ The correct answer is option Person to person transmission.
1053. Virulence of Gonococcus is due to___________________?
A. Pili
B. Cell Membrane
C. Its intracellular location
D. Cytolytic enzymes
✅ The correct answer is option Pili.
1054. Delayed tuberculin test response is due to_______________?
A. B lymphocytes
B. T lymphocytes
C. Monocytes
D. Histiocytes
✅ The correct answer is option T lymphocytes.
1055. A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
A. Pasturella spp
B. Francisella spp
C. Bartonella spp
D. Brucella spp
✅ The correct answer is option Brucella spp.
1056. Which of the following is not a koch’s postulate ?
A. The bacteria should be able to be isolated from a diseased tissue
B. When inoculated in experimental animals bacteria may or may not cause disease
C. Pure cultures can be obtained
D. Bacteria should be able to be isolated from the diseased tissue in the experimental animals
✅ The correct answer is option When inoculated in experimental animals bacteria may or may not cause disease.
1057. The major intestinal pathogens which are non-lactose fermenters are_________________?
A. Salmonella
B. Klebsiella
C. Escherichia
D. Paracolons
✅ The correct answer is option Salmonella.
1058. Graft versus host reaction is caused by_________________?
A. B-Lymphocytes
B. T-lymphocytes
C. Monocytes
D. Leukocytes
✅ The correct answer is option T-lymphocytes.
1059. Exotoxins are____________________?
A. Lipid-polysaccharide complex
B. Protein compound
C. Lipoprotein
D. None
✅ The correct answer is option Protein compound.
1060. Viruses can be cultured in all except_______________?
A. Chick embryo
B. Blood agar
C. Guinea pigs
D. Cell culture
✅ The correct answer is option Blood agar.