Multiple choice

What are the special compounds having extremely hydrophobic lipids embedded in the peptidoglycan of high GC gram positive bacterial group?

  1. Mycolic acid

  2. S layer

  3. Endospores

  4. Fimbriae

  5. PHB
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A Correct answer
Explanation

Many genera in the high GC gram positive bacterial group such as Mycobacterium and Nocardia contain mycolic acids embedded in the peptidoglycan. Mycolic acids are a class of waxy extremely hydrophobic lipids. Certain genera contain very large amounts of this lipid and are difficult to gram stain. These genera may be identified by the acid fast staining technique.

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