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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

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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.

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User Nithish
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