Botany (M.Phil./Ph.D.) 2022 Panjab University Entrance Exam With Answers

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Acid-fast staining is a differential stain used to identify acid-fast organisms (genus Mycobacterium). The procedure of acid-fast staining includes heating of bacteria and mixing basic fuchsin phenol. Once basic fuchsinpenetrates the cell wall, acid-fast cells are not easily decolorized by an acid alcohol treatment and hence remain red this is because of which component:-

A: Dipicolinic acid
B: Teichoic acid
C: Peptidoglycans (murein)
D: Mycolic acid

The answer is: D