1. HIV can be detected and confirmed by: Real Time PCR. Mimic PCR. Reverse Transcriptase-PCR. Polymerase Chain Reaction (PCR). 2. For uniform staining reaction, morphology & biochemical activity, it is advisable to study bacterial cultures during the Stationary phase Death phase Lag phase Logarithmic phase 3. Benzalkalonium chloride belongs to which category of disinfectants: Quaternary ammonium compounds Essential oils Biguanides Phenolic compounds 4. Characteristic feature of retiovirus is: Ribonuclease Restriction endonuclease DNA polymerase Reverse transcriptase 5. Process of tissue culture is known as? Macro propagation Micro propagation Vegetative propagation Chemical propagation 6. For sterilization efficiency determination, the biologic standard used is: B. Fragilis Spores of harmless bacteria Spores of clostridium tetani Streptococcus pneumonia 7. Gram -ve bacteria stain during gram staining: Green Colorless Blue color Red color 8. The single most important laboratory test for determining the virulence of staphylococci is Mannitol fermentation Hemolysis of sheep erythrocytes The catalase test Detection of coagulase 9. Dark ground microscopy is useful to identify: Rickettsiae Spirochaetes Chlamydiae Mycoplasma 10. Hemolytic Streptococci can cause serious cross infections in hospital settings. These bacteria usually harbor which site in health workers working in the hospitals: Hair Nails Throat Skin 11. Graft versus host reaction is caused by Leukocytes T-lymphocytes Monocytes B-lymphocytes 12. Positive Shick’s test indicates that person is hypersensitive to diphtheria Susceptible to diphtheria Carrier of diptheria Immune to diphtheria 13. Actinomycosis is caused by: cid fast. Non-motile bacillus Fungus Retrovirus Anaerobic, gram positive, non-acid fast bacteria. 14. Following hepatitis B infection transfusion disease manifests in: 6 months 6week 1 week 3 months 15. Blood spills in hospital are disinfected with Quarternary ammonium compounds Absolute alcohol Cetavlon Sodium hypochlorite 16. Adenosine deaminase deficiency is seen in the following: Severe combined immuno deficiency syndrome Nezelofs syndrome Chronic granulomatous disease Common variable immuno deficiency syndrome 17. Germ tubes are formed mainly by Candida stellatoidea Candida tropicalis Candida pseudotropicalis Candida albicans 18. IL-1 and TNF – ? during Inflammation are secreted by Activated macrophages Platelets Lymphocytes Plasma cells 19. New method of sterilizing heat sensitive equipment: Ionizing radiation Plasma sterilization UV radiation Non-ionizing radiation 20. The exact part of the antigen that reacts with the immune system is called as Paratope Epitope Clone Idiotope Loading … Question 1 of 20
