The Gram Stain (Gram-Positive vs Gram-Negative) and Bacterial Structure | Microbiology 🧫
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- čas přidán 7. 08. 2024
- The Gram Stain (Gram-Positive vs Gram-Negative) and The Structure of the bacterial cell wall | Microbiology 🧫
Peptidoglycan, Lipopolysaccharide (LPS) Endotoxin (vs Exotoxin), Lipoteichoic acid, Teichoic acid.
Gram stain uses crystal violet. Gram positive bacteria appears purple (Violet) whereas gram negative organisms appear pink in color (Fuscin).
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It's the best lesson about gram positive and negative
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Hi medicosis one question so does the endotoxins found only in the gram negative bacteria? And what about the exotoxins?
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Can you please explain What feature in the outer membrane of the gram negative cell wall makes these cells resistant to the antibiotic?
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Both gram positive and negative have outermost layer of a capsule right?
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why is it that khan academy video on gram staining is showing the opposite of what is shown in this video? On khan academy's video they are showing gram negative with more layers and with LPS. I am really confused about that.
The gram negative bacteria cell wall is more complex than the gram positive one, even though it has a lesser amount of peptidoglycan in its cell wall. It has 2 layers in its cell wall. A thick outer layer with lipoproteins,lipopolysacchrides(Mainly)and phospholipids. And its inner layer having a lesser amount of peptidoglycan compared to gram positive bacteria.
Hope it’s clear now 😅
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so if it's gram negative do you acid-fast stain instead of endospore stain?
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GREAT VIDEO! Very easy to understand and also good for memorize !