Q.

What was observed after centrifugation was done in bacterial cells that were infected with a bacteriophage growing in presence of radioactive phosphorous?

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a

The supernatant becomes radioactive due to the presence of radioactive phosphorous and the precipitate remains non-radioactive.

b

The sediment becomes radioactive due to the presence of radioactive phosphorous and the supernatant remains non-radioactive.

c

Both supernatant and sediment become radioactive.

d

Radioactivity is observed neither in precipitate nor the supernatant.

answer is B.

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Detailed Solution

After centrifugation is done in bacterial cells that were infected with a bacteriophage growing in presence of radioactive phosphorous, the sediment becomes radioactive due to the presence of radioactive phosphorous and the supernatant remains non-radioactive.
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