A researcher would like to radioactively label DNA for an experiment.Which type of molecule could not serve as a target for radioactive labeling?
A) Purines
B) Ribose sugars
C) Phosphates
D) Sulfur
E) Nitrogenous bases

Question

Quizplus · Accepted Answer

Sulfur is not a component of DNA, which is made up of a sugar-phosphate backbone and nitrogenous bases. Purines, ribose sugars (though DNA uses deoxyribose, not ribose), phosphates, and nitrogenous bases are all integral parts of DNA and can be labeled radioactively.

A Researcher Would Like to Radioactively Label DNA for an Experiment.Which