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Doctors Medicines MCQs Q&A

The following statements are TRUE in reference to endo-toxins, EXCEPT

The following statements are TRUE in reference to endo-toxins, EXCEPT Correct Answer They are heat liable proteins

Explanation:

Characteristics Exotoxins Endotoxins
Source Living gram-positive and gram-negative bacteria Lysed gram-negative bacteria
Location Released from the cell Part of cell
Chemical Composition Protein Lipopolysaccharide
Heat Sensitivity Liable (6°-8°C) Stabel (25°C)
Immune Reactions Strong Weak
Conversion to Toxoids Possible Not possible
Fever No Yes
Enzyme Activity It has mostly enzymatic activity. It has no enzymatic activity.
Molecular Weight Its molecular weight is 1 KDa. Its molecular weight is 50-1000 KDa.
Denaturing On boiling it get denatured. On boiling it cannot be denatured.
Specificity Specific to the particular bacterial strain Non-specific
Antigenicity High Poor
Examples Staphylococcus aureus, Bacillus cereus, Streptococcus pyogenes, Vibrio cholera, Bacillus anthracis. E. coli, Salmonella typhi, Shigella.

Related Questions

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Q. The true stress-true strain curve in compression is lower than the true stresstrue strain curve in tension due to Bauschinger effect.
R. The true stress-true strain curve in tension is above the corresponding engineering stress-strain, curve.
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Endotoxins are
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