Micro lab.docx

Micro lab.docx - 1 What can be the first step done to...

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1) What can be the first step done to identify the organisms present in a sample of stool collected from a patient who is suffering from severe diarrhea? 2) What is gram variability? How can it affect your results? Same bacteria cells from a pure culture will have some cells stain Gram positive and some cells stain Gram negative. 3) Which step is the most crucial or most likely to cause poor results in the Gram The decolorizer step is most crucial in the Gram stain, because this step involves the removing the color from the cell.Over-decolorizing will result in the lost of the primary stain causing the Gram-positive to turn red and look like the Gram-negative cell./ alter the state of the gram positive bacteria causing the cell to lose its color and turn clear and not violet 4) What is the function of the iodine solution in the Gram stain? If it were omitted, how would staining results be affected? to fix the dye on the slide in order to form insoluble substance.
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