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Multiple Choice
The bacteria that Griffith experimented with were termed "R"and "S"bacteria because:
A
Of the way they grew on artificial media.
B
The "S"bacteria formed smooth appearing colonies.
C
The "R"bacteria formed rough appearing colonies.
D
All are correct.
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Verified step by step guidance
1
Understand the context of Griffith's experiment: Griffith's experiment was a pivotal study in microbiology that demonstrated the phenomenon of transformation in bacteria.
Identify the characteristics of 'S' bacteria: The 'S' bacteria are known for forming smooth colonies due to the presence of a polysaccharide capsule, which gives them a glossy appearance on media.
Identify the characteristics of 'R' bacteria: The 'R' bacteria lack the polysaccharide capsule, resulting in rough colonies with a matte appearance on media.
Recognize the significance of colony morphology: The terms 'R' and 'S' are derived from the colony morphology observed on artificial media, which is a key aspect of bacterial identification and classification.
Conclude that all statements are correct: Each statement regarding the growth and appearance of 'R' and 'S' bacteria on artificial media is accurate, supporting the conclusion that all are correct.