5651. Anaerobic bacteria grow_______________?
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A. in the presence of oxygen

B. in the presence of nitrogen

C. differential media

D. in the absence of oxygen
5652. The commonest method of detection of diptheria carriers is_______________?
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A. Schick test

B. Casonis test

C. Dick test

D. Charles test

5654. cAMP reaction is shown by which streptococci ?
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A. Group A

B. Group D

C. Group C

D. Group B
5656. Which of the following is obligate aerobe ?
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A. Pseudomonas aerogenosa

B. Proteus

C. coli

D. diphtheria

5657. Function of T-lymphocyte is/are________________?
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A. Production of interferon

B. Rosette formation

C. Lymphokine production

D. All of the above
5660. The single most important laboratory test for determining the virulence of staphylococci is___________?
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A. Detection of coagulase

B. Mannitol fermentation

C. The catalase test

D. Hemolysis of sheep erythrocytes

5661. Which of the following is not a feature of anaphylaxis ?
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A. None of the above

B. Immediate reaction

C. Delayed reaction

D. passive transfer by serum

5664. 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
5665. Diphtheria is pathogenic only when infected with______________?
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A. Beta phage

B. Alfa phage

C. Lambda K12

D. Delta Phage

5666. The function of IgD is______________?
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A. Antigen recognition by B cells

B. Reagin activity

C. Localization protection in external secretion

D. Compliment activation

5667. Which organism causes prosthetic valve endocarditis within 60 days of surgery________________?
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A. Fungus

B. Staphylococcus aureus

C. Streptococcus Viridans

D. Staphylococcus epidermis
5668. About Bacteroids True are all Except_______________?
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A. Most common species is B fragilis

B. Bile resistant anerobes

C. Present mainly in mixed infections

D. Susceptible to many antibiotics
5669. The diagnosis of gonorrhea is established by_____________?
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A. Pili agglutination tests

B. Haemagglutination tests

C. All of the above tests

D. Compliment fixation tests

5670. An example of naturally acquired passive immunity is__________________?
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A. Placental transfer of antibodies

B. Gamma globulin injection

C. Immune blood transfusion

D. Hepatitis vaccination

5671. Selective media for MYCOBACTERIUM _____________?
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A. Lowenstein Jensen medium

B. Sabourauds medium

C. Loefflers serum slope

D. Agar agar

5672. Encapsulation in bacteria helps in__________________?
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A. Oxygen effect

B. Spore formation

C. Decreased virulence

D. Prevent their phagocytosis
5673. Sterilisation is______________?
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A. Non-pathogenic killed

B. All pathogenic and non-pathogenic microorganisms killed

C. Pathogens killed but spores are not affected

D. Only pathogenic micro-organisms killed

5674. Dental Plaque adheres to tooth surface by________________?
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A. Bacteria

B. Dextran

C. Epithelial cells

D. Sucrose

5676. In T.B cell mediated immunity is by_______________?
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A. CD 4*

B. None of the above

C. B lymphocytes

D. CD 8*

5677. Glasswares are sterilised by______________?
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A. Incineration

B. Hot air oven

C. Formaldehyde

D. Autoclaving

5679. Which component of the cell wall is responsible________________?
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A. Region II

B. Region III

C. Region I

D. Boivin antigen

5682. Immunoglobulins ar secreted by______________?
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A. Neutrophils

B. T-cells

C. Macrophages

D. Plasma cells
5683. Physical sterilization was discovered by__________________?
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A. Alexander flemings

B. John Hunter

C. Robert Koch

D. Joeph Lister
5684. Causative agents of Vincents angina_____________?
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A. Borrelia burgoloferi and lactobacillus

B. Borrelia recurrents and bateroides

C. Leptospira and Treponema pallidum

D. Borrelia vincenti and fusobacterium fusiformis
5685. Which of the following is an enrichment medium________________?
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A. Selenite F Broth

B. Nutrient Broth

C. Blood agar

D. Mac Conkey agar

5686. Steam under pressure in used in ________ sterilization?
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A. Pasteurization

B. hot air oven

C. Autoclave

D. Kochs sterilizer

5687. Widal test is specific for____________?
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A. Plague

B. Pemhigoid

C. Typhoid

D. Leprosy

5688. ASO (Antistreptolysin 0) test is uesd for the diagnosis of________________?
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A. Rheumatoid arthritis

B. Rickettsial fever

C. Typhoid fever

D. Rheumatie fever
5689. One of the following is a zoonotic disease_____________?
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A. Bacillary dysentery

B. Typhoid

C. Cholera

D. Anthrax
5690. Subacute bacterial endocarditis is caused by_____________?
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A. Haemolytic streptococci

B. Nisseria

C. Streptococcus viridans

D. Staphylococcus aureus

5691. Borrelia vincenti is always associated with______________?
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A. Spirochaetes

B. Treponema vincenti

C. Fusiform bacilli

D. None of the above

5692. Rideal Walker test is used to determine the efficiency of the_____________?
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A. Antibiotics

B. Dry heat sterilization

C. Moist heat sterilisation

D. Disinfectant
5696. Smith noguchis media is used for_______________?
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A. Spirochetes

B. Klebsiella

C. Salmonella

D. Bacillus

5698. Nagglers reaction detects________________?
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A. Lecithinase

B. None of the above

C. Coagulase

D. Hyaluronidase

5699. Bacteria with tuft of flagella at one end are called_______________?
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A. Lophotrichate

B. Bipolar

C. Peritrichate

D. Monotrichate

5700. The bacterial cell wall has all of the following properties except______________?
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A. It is the structure principally responsible for the reaction of gram staining

B. It consists of a mixed polymer called peptidoglycon

C. It contains D-isomers of amino acids

D. It is a unique flexible plastic structure