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  3. 1.) you are asked to prepare a gram stain from a m

1.) You are asked to prepare a gram stain from a mixture of gram positive and...

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Biology

1.) You are asked to prepare a gram stain from a mixture of grampositive and gram negative bacteria during lab. What would happenif you remembered all steps.... except to decolorize – what colorwould the Gram (+) and Gram (-) be? except to add safranin – whatcolor would the Gram (+) and Gram (-) be?

2.) The organism Yersinia pestis causes the plague, which causeda pandemic in Europe. What test reults would you expect to observeif samples from a plague patient were analyzed using the gramstain, the endospore stain, the capsule stain, and the acid-faststain? Include the expected shape of the cell, the color Y. pestiscells should turn for each stain, and if the result is positive ornegative.

Answer & Explanation Solved by verified expert
4.1 Ratings (867 Votes)
1 There will be purple colour only for both because alcohol is added for decolourisation Due to which the bacterial cell wall gram negative cannot break and washed out In second case where saffranin is not    See Answer
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