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The appearance of bacterial colonies in the S strain is described as which of the following?

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Question

The appearance of bacterial colonies in the S strain is described as which of the following?

Options

  • Rough and dull

  • Crystalline and brittle

  • Smooth and shiny

  • Transparent and gelatinous

MCQ
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Solution

The S (Smooth) strain of Streptococcus pneumoniae produces colonies that appear smooth and shiny due to the presence of the polysaccharide capsule. In contrast, the R (Rough) strain produces rough, dull colonies because it lacks this protective capsule.

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