First slide

The Search for Genetic Material

Question

R strain of Streptococcus pneumoniae differs with S strain in

Easy

A

lacking plasmids
B

being gram positive
C

lacking glycocalyx
D

lacking mesosomes

Solution

R strain of Sterptococcus pneumoniae is avirulent, lacks glycocalyx and forms rough colonies on agar plates. S strain is virulent, has glycocalyx and forms smooth and shiny colonies on agar plates.

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