37)which of the following genera are lactose-fermenters? a) Excherichia b) Enter

Question

37)which of the following genera are lactose-fermenters? a) Excherichia b) Enterobacter c) Salmonella and shingella d) All of the above e) Only A and B above

38)The main antibiotic effective against Salmonella typhosa is: a) Penicillin b) streptomycin c) Chloramphenicol d) Sulfanilamine e) None of the above

39)Poliomyelitis is spread primarily by: a) Respiratory secretions b) Droplet nuclei c) Feca-oral route d) Only A and B above

40)The most common method for the transmission of serum hepatitis is: a) direct injection b) Respiratory secretions c) Fomities d) Contaminated water e) None of the above

41)The infective source for amebic dysentery is: a) Chickens b) Chronically infected persons c) carriers d) All of the above e) Only B and C above

42)Urinary tract infections are most commonly caused by: a) Gram-negative bacilli b) gram-positive cocci c) gram-positive bacilli d) Gram-negative cocci e) None of the above

Explanation / Answer

37. Fermentation takes place if there is no oxygen the cells enter the fermentation process. Al the genera enterobacter, E.Coli, Salmonella and Shingella can ferment lactose.

Hence the correct option is d.

38. Typhoid is a fever that is mainly caused by the Salmonella typosa. Chloramphenical is treated as the best antibiotic for this as it has the best cell penetrating capacity and kills the bacteria.

Hence the correct option is c.

39.Poliomyelitis is commonly called as polio caused by a rod shaped polio virus. The main route to spread this disease is through the fecal matter and the oral route.

Hence the correct option is c.

40. Serum hepatitis commonly called as hepatitis B is a liver infection. This is a very serious disease that can be spread very fast even by a small drop of blood. There is no need of direct injection even an exposure to the infected blood causes hepatitis.

Hence the correct option is d.

41. Amoebic dysentry is a gut infection caused by the E.Hystolytica. This is mainly due to maintainenece of unhygenic environment. the free amoeba can enter the gut through contaminated foof,water and also by the infected persons.

Hence the correct option is d.

42. Urinary tract infections causes infections to the urethra and bladder and mainly affects women. Symtoms include burning sensation during urine passage, rashes etc. E.coli a gram-positive bacilli is main responsible bacteria for this UTI.

hence the correct option is a

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