microbiology Mcqs
301. 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*

302. Glasswares are sterilised by______________?
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A. Incineration

B. Hot air oven

C. Formaldehyde

D. Autoclaving

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

B. Region III

C. Region I

D. Boivin antigen

307. Immunoglobulins ar secreted by______________?
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A. Neutrophils

B. T-cells

C. Macrophages

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

B. John Hunter

C. Robert Koch

D. Joeph Lister
309. 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
310. 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

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

B. hot air oven

C. Autoclave

D. Kochs sterilizer

312. Widal test is specific for____________?
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A. Plague

B. Pemhigoid

C. Typhoid

D. Leprosy

313. 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
314. One of the following is a zoonotic disease_____________?
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A. Bacillary dysentery

B. Typhoid

C. Cholera

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

B. Nisseria

C. Streptococcus viridans

D. Staphylococcus aureus

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

B. Treponema vincenti

C. Fusiform bacilli

D. None of the above

317. 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
321. Smith noguchis media is used for_______________?
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A. Spirochetes

B. Klebsiella

C. Salmonella

D. Bacillus

323. Nagglers reaction detects________________?
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A. Lecithinase

B. None of the above

C. Coagulase

D. Hyaluronidase

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

B. Bipolar

C. Peritrichate

D. Monotrichate

325. 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
330. The most primitive mode of gene transfer occurs by____________?
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A. Transduction

B. Cell fusion

C. Translation

D. Conjugation
331. The facultative anaerobic bacteria are those who are_______________?
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A. Able to grow in the presence of absence of oxygen

B. Unable to grow in the absence of oxygen

C. Unable to grow in the presence of oxygen

D. Able to grow in the presence of carbon dioxide

333. Graft versus host reaction is caused by_________________?
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A. T-lymphocytes

B. Monocytes

C. B-Lymphocytes

D. Leukocytes

334. Each of the following viruses possesses an outer lipoprotein envelope except_____________?
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A. Influenza Virus

B. Papilloma Virus

C. Varicella Zoster Virus

D. Human immunodeficiency virus

335. Salivary peroxidise system is known to be effective agianst________________?
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A. Lactobacillus acidophilus

B. Actinomyces viscosus

C. Streptococcus mutans

D. Veilonella parvula

336. The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
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A. Mycoplasma

B. Virus infections

C. Gram negative organisms

D. Gram positive organisms

337. Pseudomonas aeruginosa_________________?
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A. Produces heat stable enterotoxin

B. Causes Shangai fever

C. Cannot be destroyed at 55 degree at 1 hr.

D. Does not produce any pigment

338. Culture medium used for Bordatella pertussis is_________________?
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A. Wilson Blair medium

B. Bordet Gengou medium

C. Robertson cooked meat medium

D. Bile broth

340. Negative staining is used to demonstrate________________?
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A. Bacterial capsule

B. Bacterial spore

C. Bacterial fimbriae

D. Bacterial Flagella

342. Granules in the corynebacterium diphtheria are called by following names, except______________?
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A. Voluntin granules

B. Refractile granules

C. Babes Ernst granules

D. Metachromatic granules

343. Hospital dressing is best disposed by_____________?
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A. Burying

B. Dumping

C. Autoclaving

D. Incineration
344. Pasteur developed the vaccine for_______________?
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A. Rabies

B. All of the above

C. Anthrax

D. Cholera

345. About N. gonorrhoea, all are true except__________________?
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A. Found exclusively in human beings.

B. Most common cause of urethritis is male

C. Wide spread axoregnic stains cause disseminated gonococcal infection

D. All stains are highly susceptible to penicillin
346. Sterilisation control for moist heat is or The efficacy of the moist heat sterilization technique commonly used to sterlilize laboratory ware and culture media is tested by using_______________?
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A. Using chemical indicator

B. Using non-pathogenic strain of clostridium tetani

C. Using methylene blue

D. using Bacillus stearo thermo philus
347. Leptospirosis, all are true except______________?
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A. Incubation period is 10 days

B. It is sensitive to penicillin

C. Faeces & urine of rodents is the cause

D. Onset of IgM in 2 days
348. Drumstick appearance is seen in______________?
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A. Cl. sphenoids

B. Cl. tetanomorphum

C. Cl. tetani

D. All of the above

349. which of the following is anaerobic_______________?
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A. Pseudomonas

B. E.coli

C. Klebsiella

D. Bacteroides
350. Dark ground microscopy is useful to identify______________?
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A. Chlamydiae

B. Spirochaetes

C. Rickettsiae

D. Mycoplasma