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Paper I — 2022 July (Supplementary) (2019 Scheme) — Q21

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Paper I
2022 July (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

Name two selective media

Q211 marks

Answer

Two selective media: MacConkey agar (selects for Gram-negative enteric bacilli, inhibiting Gram-positive organisms) and Thayer-Martin medium (selects for Neisseria gonorrhoeae, inhibiting commensal flora with added antibiotics).

(Other valid examples: TCBS agar for Vibrio cholerae; DCA/XLD agar for Salmonella/Shigella.)

  1. 1Bacterial Morphology and Physiology

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