Griffith's Experiments, Which Showed the Transformation of R Strain Pneumococcus

question 203

Multiple Choice

Griffith's experiments, which showed the transformation of R strain pneumococcus bacteria to S strain pneumococcus bacteria in the presence of heat-killed S strain bacteria, provided evidence that

• A) a factor from S strain was modifying the R strain bacteria.
• B) DNA was definitely the transforming factor.
• C) heat-killed S strain bacteria could be reactivated.
• D) S strain bacteria are resistant to heat-killing.
• E) R strain bacteria are resistant to heat-killing.

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