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Acid-fast organisms such as Mycobacterium tuberculosis contain lipids constructed from ________________in their cell walls.

1) proteins
2) carbohydrates
3) mycolic acids
4) peptidoglycan

User Ravelinx
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1 Answer

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Final answer:

The cell walls of acid-fast organisms, like Mycobacterium tuberculosis, are composed of mycolic acids, requiring specialized staining techniques for visualization due to their waxy nature.

Step-by-step explanation:

Acid-fast organisms such as Mycobacterium tuberculosis contain lipids constructed from mycolic acids in their cell walls. Mycolic acids act as a barrier, providing protection against dehydration and immune system phagocytosis. The presence of these waxy mycolic acids makes the cell walls impervious to many staining techniques, and therefore, acid-fast staining procedures, such as the Ziehl-Neelsen technique or the Kinyoun technique using carbolfuchsin, are required to visualize these bacteria. This characteristic also contributes to their slow growth and increased survival capability within host organisms.

User Nithish
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