Question

To distinguish one bacterium from another, which of the following might be useful? Testing fermentation of specific sugars Measuring activity of certain enzymes Gram stain All of the above

Answer 1

& To Distinguish one bacterium from another all of the process are useful. Goam Staining identify whether the bacteria is Gram positive bacteria or Gram negative bacteria Purple Colom Gram Positive Bacteria Red/drenge - Gram Negative Bacteria Activity of certain enzymes also identify bacteria whether it contain the enzyme or not. Eg. for further identification of Gram positive or Gram negative Bacteria, it can be tested for Catalase positive negative , coagulase +/- 9 oxidase +/- Testing fermentation of specific sugar is also useful for further identification. This is generally used for Gram negative bacteria. Eg. Lactose fermenter of non-lactose fermenter, fermentation of Glucose & Suctose take place or so option (d) is correct not.