Its d the cell wall. The plant cell contains a cell wall that is absent in a animal cell.
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Answer: The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.
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The correct option is <em>E. Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.</em>
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The element phosphate is actively present in the DNA but it is not present in the proteins.
Nitrogen is an active constituent of the DNA as well as the proteins. Hence, if nitrogen will be used for the Hershey and Chase experiment, then the results will that we will get will be wrong. We wouldn't be able to distinguish between the nitrogen atoms which came from the DNA and the nitrogen atoms which came from amino acid or proteins.