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\nGram Staining\n

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\nGram staining is a differential staining method that classifies bacteria as Gram-positive (purple) or Gram-negative (red) based on their cell wall structure and composition. Gram-positive bacteria retain crystal violet due to a thick,...\nGram staining is a differential staining method that classifies bacteria as Gram-positive (purple) or Gram-negative (red) based on their cell wall structure and composition. Gram-positive bacteria retain crystal violet due to a thick, cross-linked peptidoglycan layer and low lipid content, while Gram-negative bacteria, with thinner walls and higher lipid content, lose the stain after alcohol treatment and take up the counterstain, safranin. Variability in staining (Gram-variable reaction) may occur in older cultures or due to environmental or technical factors.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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6:07
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Grade
9th - Higher Ed
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nBioMagica\n\n
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Date
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2018
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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microbiology, purple
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Additional Tags

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gram staining, set, staining methods, staining techniquei microbiological staining, counter stain, heat fix, crystal wallet, pore size, crystal wall, gram negative, staining technique, crystal violet, cell wall, high amount, alcohol treatment, cells lose, cells retain, violet, stained, cell, amount, peptidoglycan, treatment, stain, alcohol, group, lose, lipid, trapped, variations, retain, pink
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Classroom Considerations

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\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Gram Staining\" href=\"/subscription/new\">\"Gram\n\n
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