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The Search for Genetic Material

Question

The S strain of Pneumococcus produces smooth shiny colonies because they:

Easy

A

Have Mucous coat
B

Have Proteinaceous coat
C

Form endospore
D

Have lipid coat

Solution

When Streptococcus pneumoniae (pneumococcus) bacteria are grown on a culture plate, some produce smooth shiny colonies (S) while others produce rough colonies (R). This is because the S strain bacteria have a mucous (polysaccharide) coat, while R strain does not.

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