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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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