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Microbiology

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Clinical/Applied Microbiology

Question
38 out of 45
 

The phenomenon whereby accumulation of a diffusible low molecular weight signal molecule enables individual bacterial cells to sense when the minimum number of bacteria has been achieved is (AIPG 2012)



A DNA microarray

B Dienes phenomenon

C Quorum sensing

D Splendore-Hoeppli phenomenon

Ans. C Quorum sensing

a. DNA Microarrays monitors whole genome on a minaturized glass substrate or “chip” enabling visualization of interactions among thousands of genes simultaneously & has been applied to pathogen identification & classification, polymorphism detection & detection of drug resistance mutations for viruses & bacteria

b. Splendore-Hoeppli or Asteroid phenomenon: central basophilic yeast cell with eosinophilic (immune complex deposition) material radiating from it on staining with PAS eg. Sporothrix , Blastomyces

Clinical/Applied Microbiology Flashcard List

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