2001. Immunoglobulins ar secreted by______________?
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A. T-cells

B. Plasma cells

C. Macrophages

D. Neutrophils

2002. Bacteria with tuft of flagella at one end are called_______________?
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A. Bipolar

B. Monotrichate

C. Lophotrichate

D. Peritrichate

2003. Streptococcus is classified based on__________________?
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A. M Protein

B. Cultural characteristics

C. Bile Solubility

D. Cell wall carbohydrate
2004. Killer and Helper cells are part of_______________?
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A. Monocytes

B. Macrophage

C. B cells

D. T cells
2005. Secretory Ig is_______________?
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A. IgA

B. IgM

C. IgE

D. IgD

2006. Glutaraldehyde is preferred more than formaldehyde because______________?
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A. It has got more bacteriostatic activity

B. Its application is easier

C. It has got more bactericidal activity

D. It has got no deleterious effect on the cement and lenses of instruments
2007. Anaerobic bacteria can be cultured in__________________?
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A. Loefflers medium

B. L-J medium

C. Robertson cooked meat medium

D. Sabourauds agar

2008. What is the transport medium for cholera___________________?
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A. Tellurite Medium

B. Cary Blair Medium

C. Venkatraman Ramakrishnan Medium

D. B & C
2009. Tyndallisation is carried out for________________?
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A. Three successive days

B. Two successive days

C. 60 minutes

D. One day

2010. Germ tubes are formed mainly by_______________?
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A. Candida tropicalis

B. Candida stellatoidea

C. Candida pseudotropicalls

D. Candida albicans
2011. Which of the following are correctly matched ?
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A. All of the above

B. Transfer of antibody from mother to child is through colostrum and acquired passive immunity naturally

C. Injection of antibodies (Hepatitis) is artificially acquired passive immunity

D. Antigenic stimulus given by vaccine (polio) is artificial active immunity

2012. Characters of exotoxin include all, except_______________?
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A. Protein polysaccharide complex

B. Has specific tissue affinity

C. Highly potent

D. Heat labile

2013. Multiple drug resistance of bacteria depends on which of the following_______________?
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A. Resistance transfer factor (RTF)

B. All of the above

C. Fertility factor (F+)

D. Colicigenic factor (Col)

2014. Which of the following antibacterial substance is present in eggs and saliva ?
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A. Albumin

B. Secretozyme

C. Isozyme

D. Lysozyme
2015. All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?
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A. Gram staining

B. Colony morphology on saliva agar

C. Fermentation of mannitol and sorbital

D. Production of intracellular and extracellular adherent polysacharide

2016. Bacterial cell does not possess___________________?
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A. Mitochondria

B. dna

C. Ribosome

D. Cell wall

2017. Type I hypersensitivity is mediated by which of the following immunoglobulins ?
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A. IgA

B. IgG

C. IgE

D. IgM

2018. IgG has subclasses_______________?
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A. 4

B. 2

C. 1

D. 3

2019. The binding site for complement on the IgG molecule is in the________________?
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A. CL domian

B. CH1 domian

C. VL domian

D. CH2 domian
2020. Noguchis medium is used for________________?
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A. Brucella

B. None of the above

C. Borrelia

D. Bordetella

2021. In patients with asthma due to an allergic cause the serum levels of which immunoglobulin increase____________________?
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A. IgD

B. IgE

C. IgA

D. IgM

2022. compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?
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A. Time-consuming

B. Less effective

C. Causes instruments to rust

D. Causes sharp instruments to dull

2023. The immediate type of hypersensitivity in which histamine doses not play a major role is______________?
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A. Anaphylaxis

B. Urticaria

C. Asthma

D. Arthus reaction
2024. Plasmid__________________?
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A. Involved in multidrug resistance transfer

B. Involved in conjugation

C. Imparts capsule formation

D. Imparts pili formation

E. Both A & B
2025. The causative organism for cat-scratch disease is______________?
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A. Donovania granulomatis

B. Bartonella henselae

C. Hemophilia ducreya

D. Chlamydia trachomatis

2026. Pseudohphae are seen in____________?
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A. Candida albicans

B. Alternaria

C. Aspergillus

D. Osporium

2027. Endotoxins are produced by________________?
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A. Fungi

B. Virus

C. Gram +ve bacteria

D. Gram -ve bacteria
2028. One of the following staining methods is an example of negative staining_______________?
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A. Grams staining

B. Fontanas staining

C. Zheil-Neilsons staining

D. India ink preparation
2029. Cold sterilization refers to the process of sterilization by use of____________________?
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A. Ultrasonic vibrations

B. Infrared rays

C. Gamma rays

D. Ultra violet rays

2030. Sunlight acts as sterilizing agent because_________________?
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A. Heat

B. Ozone

C. short wave lenght

D. Long wavelength

2031. The mechanism of genetic transfer where a phage serves as a vehicle is_______________?
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A. Translation

B. Lysogeny

C. Transformation

D. Conjugation

2032. Best method of sterilizing disposable syringes_______________?
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A. U.V. rays

B. Boiling

C. Gamma rays

D. Hot air oven

2033. The usual concentration of agar used in agar medium is___________________?
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A. 2%

B. 10%

C. 5%

D. 15%

2034. Moist heat kills all of the following EXCEPT_______________?
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A. Brucella

B. Salmonella

C. Mycobacterium

D. Coxiella burnetti
2035. The diagnosis of gonorrhea is established by_____________?
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A. Compliment fixation tests

B. Pili agglutination tests

C. All of the above tests

D. Haemagglutination tests

2036. Active artificial immunization is induced by the administration of all of the following EXCEPT______________?
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A. Toxoids

B. Antitoxins

C. Vaccines

D. Bacterial products

2037. Which of the following organisms does NOT react with grams stain ?
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A. Mycobacterium tuberculosis

B. Candida albicans

C. Streptococcus mutan

D. Actinomyces israelii

2038. Encapsulation in bacteria helps in__________________?
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A. Spore formation

B. Prevent their phagocytosis

C. Oxygen effect

D. Decreased virulence

2039. Each of the following viruses possesses an outer lipoprotein envelope except_____________?
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A. Human immunodeficiency virus

B. Papilloma Virus

C. Varicella Zoster Virus

D. Influenza Virus

2040. The following immunoglobulin is not known to fix complement_________________?
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A. IgA

B. IgG

C. IgM

D. IgE
2041. Physical sterilization was discovered by__________________?
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A. Robert Koch

B. Alexander flemings

C. John Hunter

D. Joeph Lister
2042. Dental Plaque adheres to tooth surface by________________?
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A. Bacteria

B. Epithelial cells

C. Dextran

D. Sucrose

2043. One of the following statement about statements about sterilization is not true_______________?
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A. Liquid paraffin ? Dry heat

B. Glass syringes ? Boiling at 169C for 60 min

C. Vaccines ? Ethylene oxide

D. Flash pasteurization of milk ? 72 C for 15 seconds, followed quickly by rapid cooling to 13C for lower

2044. A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______________?
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A. Staph. aureus

B. B.Cereus

C. Clostridium botulinum

D. Salmonella

2045. Subacute bacterial endocarditis is caused by_____________?
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A. Streptococcus viridans

B. Nisseria

C. Staphylococcus aureus

D. Haemolytic streptococci

2046. Anaphylaxis refers to the________________?
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A. Severe reaction following the injection of protein solution in a sensitized individual

B. Severe reaction resulting from sensitivity to common allergens

C. Severe reaction following primary injection of Protein solutions

D. State of immunity developed by repeated injections of any foreign substance

2047. Actinomycosis is caused by______________?
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A. Retrovirus

B. Fungus

C. Acid fast, non-motile bacillus

D. Anaerobic, gram positive, non-acid fast bacteria.
2048. Endoscopes are sterilized by using_______________?
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A. Cidex

B. Autoclaving

C. Gamma radiation

D. Boiling
2049. Bacterial spores are destroyed by_______________?
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A. Boiling at 100C

B. Pasteurisation

C. Disinfection by hypochlorite solution

D. Autoclave
2050. Hydatid cyst is__________________?
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A. Congenital

B. Fungal

C. Parasitic in nature

D. Viral