RESPIRATORY
OLD TUBERCULOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Coco
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breather
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Vibrio
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Bacillus
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Detailed explanation-1: -Mycobacteria are Gram-positive, catalase positive, non-motile, non-spore forming rod-shaped bacteria (0.2–0.6 m wide and 1.0–10 m long). The colony morphology of mycobacteria varies with some species growing as rough or smooth colonies. Colony colour ranges from white to orange or pink (Iivanainen, 1999).
Detailed explanation-2: -The cell envelope of Mtb comprises four main layers: (i) the plasma membrane or inner membrane, (ii) the peptidoglycan–arabinogalactan complex (AGP), (iii) an assymetrical outer membrane or ‘mycomembrane’, that is covalently linked to AGP through the mycolic acids, and (iv) the external capsule [22].
Detailed explanation-3: -Morphology of Mycobacterium tuberculosis Straight or slightly curved thin rod-shaped bacilli. Non-sporing, non-motile, non-capsulated bacteria. Acid-fast bacilli, neither gram +ve nor gram –ve. During acid-fast stain, they appear bright red to intensive purple with green/blue background.