Give Reason :On injecting a mixture of heat-killed Sbacteria and live

1.	Give Reason :On injecting a mixture of heat-killed Sbacteria and live R bacteria, the mice died.
Answer» 1. Griffith obtained live S-strain bacteria from the blood of the dead mice. 2. In a mixture of live R-bacteria and heat killed S-bacteria, live R-strain bacteria picked up something (transforming principle) from the heat-killed S bacterium and got changed into Stype. 3. Transforming principle allowed R-type bacteria to synthesize capsule and thus they became virulent. 4. Hence, on injecting a mixture of heatkilled S bacteria and live R bacteria, the mice died.

Give Reason :On injecting a mixture of heat-killed Sbacteria and live R bacteria, the mice died.

Answer»

1. Griffith obtained live S-strain bacteria from the blood of the dead mice.

2. In a mixture of live R-bacteria and heat killed S-bacteria, live R-strain bacteria picked up something (transforming principle) from the heat-killed S bacterium and got changed into Stype.

3. Transforming principle allowed R-type bacteria to synthesize capsule and thus they became virulent.

4. Hence, on injecting a mixture of heatkilled S bacteria and live R bacteria, the mice died.

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Give Reason :On injecting a mixture of heat-killed Sbacteria and live R bacteria, the mice died.

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