Difference between Gram +ve and Gram -ve stain mnemonics
By Phartoonz
1 min read
Gram staining is a common method used to differentiate between two groups of bacteria depending on their different cell wall structure. To remember it .. mnemonics
LONG PRESENTATION
LONG is related to gm -ve and PPT related to gm +ve
LONG PPT
What is the difference then in the cell wall structure ?
Gram +ve VS gram -ve
|
Gram +ve |
Gram –ve |
|
Stain blue or purple |
Stain red or rose pink |
|
Techoic acid |
Lipopolysaccharide (LPS) in outer membrane |
|
Peptidoglycan layer is thick |
Peptidoglycan layer is thin |
|
Exotoxin is a metabolic product |
Endotoxin is a metabolic product |
|
Exotoxin is thermolabile (heat sensitive) destroyed at a temperature over 60 oC |
Endotoxin is more toxic than exotoxin, destroyed at higher temperatures. |
|
Exotoxin is a high molecular weight protein. |
Endotoxin a complex structure made up of phospholipid, polysaccharides and protein. |
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