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What is present in the cell wall of Mycobacterium tuberculosis?

(a) Cellulose

(b) Nitric acid

(c) Acetone

(d) Mycolic acid

This question was addressed to me during an online interview.

The question is from Extracellular Matrix and Cell Interactions in chapter Extracellular Matrix and Cell Interactions of Cell Biology

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Correct answer is (d) Mycolic acid

Easy explanation: Mycolic acid is present in the cell wall of Mycobacterium tuberculosis. It was first isolated from this species in the year 1938 by Stodola et al. Mycolic acid helps this organism to prevent itself from chemical attacks and dehydration.

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