Question
Identify the micro-organism shown under microscopy in the photograph below?
A. Clostridium tetani.
B. Neisseria meningitidis.
C. Corynebacterium diphtheriae.
D. Enterococcus.
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Correct Answer » C Explanation |
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Ans:C. Corynebacterium diphtheriae.
The micro-organism shown in the picture above represents Corynebacterium diphtheriae.
Corynebacterium diphtheriae
- Corynebacterium diphtheriae is a nonmotile, noncapsulated, club-shaped, Gram-positive,pleomorphic bacillus.
- They have the characteristic of forming irregular, club-shaped or V-shaped arrangements in normal growth.
- They undergo snapping movements just after cell division, which brings them into characteristic forms resembling Chinese letters.
- Special stains like Alberts’s stain are used to demonstrate the metachromatic granules formed in the polar regions. The granules are called as polar granules, Babes Ernst granules.