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Q. Each of the following agents is a recognized cause of diarrhea except Enterococcus faecalisEscherichia coliClostridium perfringensVibrio cholerae Answer: Enterococcus faecalis

Q. A 30 year old woman has non-bloody diarrhea for the past 14 hours. Which one of the to following organisms is least likely to cause this illness? Salmonella enteritidisClostridium difficileStreptococcus pyogensnone of the above Answer: Streptococcus pyogens

Q. Each of the following organisms is an important cause of urinary tract infections except: Bacteriodes fragilisKlebsiella pneumoniaeProteus mirabilisNone Of These Answer: Bacteriodes fragilis

Q. Each of the following statements concerning the Gram stain is correct except: Mycobacterium tuberculosis stains blue because it has a thick lipid layerEscherichia coli stains pink because it has a thin peptidoglycan layerStreptococcus pyogens stains blue because it has a thick peptidoglycan ...

Q. The identification of bacteria by serologic tests is based on the presence of specific antigens. Which of the following bacterial components is least likely to contain useful antigens? RibosomesCell wallCapsuleFlagella Answer: Ribosomes

Q. The cogulase test is used to differentiate Staphylococcus aureus from Staphylococcus epidermidisStreptococcus pyogens from Enterococcus faecalisStaphylococcus epidermidis from Neisseria meningitidisStreptococcus pyogens from Staphylococcus aureus Answer: Staphylococcus aureus from ...

Q. Which of the following bacteria has the lowest 50% infective dose (ID50)? Shigella sonneiCampylobacter jejuniSalmonella typhiVibrio cholerae Answer: Shigella sonnei

Q. ‘Project Tiger’ was launched in: 1983197319871976 Answer: 1973

Q. Biosphere is: that part of the earth in which non-living organisms existthat park of the earth in which living organisms exist or which support lifethat part of the earth in which both living and non-living organisms existnone of these Answer: that park of the earth in which living ...

Q. National parks are: reserves which are large and diverse enough to protect whole sets of ecosystemsplaces where animals are protected in artificial setting instead of their natural habitatsome areas where wild animals are protected and preservednone of these Answer: reserves which are ...