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Question

(B) The protein coat of a bacteriophage contains sulfur-containing amino acids (like methionine and cysteine) but lacks phosphorus.Conversely,nucleic

Vedclass · Accepted Answer

$S^{35}$

Vedclass · Answer

(B) The protein coat of a bacteriophage contains sulfur-containing amino acids (like methionine and cysteine) but lacks phosphorus.Conversely,nucleic acids $(DNA)$ contain phosphorus but lack sulfur.To label the protein coat specifically without labeling the nucleic acid,the bacteriophage must be grown in a medium containing radioactive sulfur $(S^{35})$.Therefore,the correct option is $B$.

In order to label the coat alone but not the nucleic acid,the bacteriophage should be grown on $E. coli$ cells previously cultured on a medium containing

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