medical MCQs – Page 113

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

2241. Which of the following immunoglobulins has the highest mean serum concentration in humans_________________?
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A. IgM

B. IgG

C. IgD

D. IgA

2242. Disinfection frees the surface from______________?
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A. Vegetative forms

B. Spore forms

C. Both of the above

D. None of the above

2243. The component that sensitizes bacteria and virus to UV irradiation_______________?
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A. Nucleic acids

B. Lipids

C. Carbohydrates

D. Inorganic salts

2244. One of the following is a zoonotic disease_____________?
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A. Typhoid

B. Anthrax

C. Cholera

D. Bacillary dysentery

2245. The spirochete which is associated with fusospirochetosis is______________?
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A. Treponema pallidum

B. Treponjema pertenue

C. Borrelia vincenti

D. Borrelia burgdorferi

2246. Techoic acid is present in_____________?
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A. Cell wall of Gram positive organisms

B. Cell wall of Gram negative organisms

C. Cytoplasm of Gram negative organisms

D. Cytoplasm of Gram positive organisms

2247. Mycobacterium tuberculosis is best demonstrated by_________________?
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A. Ziehl-Neelsen stain

B. PAS stain

C. Grams stain

D. H & E stain

2248. Candida is most often implicated in causation___________________?
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A. Conjunctivitis

B. Tenea capitis

C. Desert rheumatism

D. Thrush

2249. Erysipelas is caused by________________?
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A. Group A steptococci

B. Gonococci

C. Pneumococci

D. Group B staphylococci

2250. Pseudomonas aeruginosa_________________?
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A. Produces heat stable enterotoxin

B. Causes Shangai fever

C. Does not produce any pigment

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

2251. Disinfection of the rooms can be done by using_______________?
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A. High efficiency particle arrestors

B. 40% formaldehyde vapour

C. Chlorine gas

D. 20% phenol

2252. Staphylococci typically occur in_________________?
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A. Irregular clusters

B. Tetrads

C. Pairs

D. Chains

2253. A protoplast is best characterized as a bacterial cell______________?
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A. containing a cell wall and a capsule

B. with a cell wall but free of a capsule

C. Uniquely sensitive to penicillin

D. Free of a cell wall and a capsule

2254. Which of the following have the capability to produce extra cellular polysaccharides______________?
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A. Strep. Mutans

B. Strep. pyogenes

C. Peptostreptococcus

D. Enterococcus

2255. Virulence of Gonococcus is due to___________________?
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A. Cell Membrane

B. Pili

C. Cytolytic enzymes

D. Its intracellular location

2256. Endotoxin have all but one of the properties given below_______________?
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A. Produced by gram negative bacteria

B. Produced by gram positive bacteria

C. Not secreted outside the cell

D. Cannot be toxoided

2257. A material which is a mixture of two different materials and its properties are_____________?
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A. Combined

B. Composite

C. Compound

D. Complex material

2258. The difference between gram positive and negative bacteria lies in their_______________?
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A. Nuclear material

B. cell wall

C. cell membrane

D. Mesosomes

2259. The bacterial cell wall has all of the following properties except______________?
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A. It contains D-isomers of amino acids

B. It is the structure principally responsible for the reaction of gram staining

C. It consists of a mixed polymer called peptidoglycon

D. It is a unique flexible plastic structure

2260. Which regards to temperature requirement, most pathogenic bacteria are_____________?
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A. Psychrophiles

B. Mesophiles

C. Thermophiles

D. Cryophiles

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