Bergey's manual gram negative cocci

PPT - Gram Negative Cocci PowerPoint Presentation - ID5783229

Gram-positive bacteria are bacteria that give a positive result in the Gram stain test.

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Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen through a microscope.

<strong>Bergey's</strong> <strong>Manual</strong> of Determinative Bacteriology - Scribd

Gram-positive bacteria - pedia

Their peptidoglycan layer is much thinner and sandwiched between an inner cell membrane and a bacterial outer membrane, causing them to take up the counterstain (safranin or fuchsine) and appear red or pink.

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Despite their thicker peptidoglycan layer, gram-positive bacteria are more receptive to antibiotics than gram-negative, due to the absence of the outer membrane.


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