1. Why Staphylococcus epidermis has gram stain positive? and why its cell morphology look like staph???

Expert Solution

Gram staining technique is the differential staining method is used to differentiate between gram positive and Gram Negative bacteria on the basis of their cell wall composition. The Gram Positive Bacteria appears purple and Gram Negative bacteria appears red after the staining procedure.

Any bacteria which appears to be Gram Positive like staphylococcus epidermidis has a thick layer of peptidoglycan in the cell wall. There is no outermost covering. This meswork of peptidoglycan layer is responsible for retaining the Crystal Violet iodine complexes, thereby appearing purple and gram positive in nature.

We refer to the morphology as Staphylococcus. It is called coccus because the cells are spherical and it is staphylo because the cells are present in clusters.

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gladiator answered 2 years ago

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