Amoebic dysentery is caused by (1) Entamoeba histolytica (2) Salmonella typhi (3) E. coli (4) Streptococcus pyogenes Answer : Entamoeba histolytica...
Tetracyclines are active against the following gram negative bacteria: A. Salmonella typhi B. Pseudomonas aeruginosa C. Yersinia pestis D. All of the above Answer : C. Yersinia pestis...
The following organisms are frequently responsible for superinfections except: A. Pseudomonas aeruginosa B. Salmonella typhi C. Clostridium difficile D. Candida albicans Answer : B. Salmonella typhi...
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ? (1) Pseudomonas (2) Mycoplasma (3) Nostoc (4) Bacillus Answer : (2) Mycoplasma...
Which of the following bacterium causes crown gall disease in plants? (1) Bacillus thurigiensis (2) Agrobacterium tumefaciens (3) Pseudomonas fluorescens (4) None of these Answer : Agrobacterium tumefaciens...
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