Problems with bacteriophage treatment for bacterial infections include (select all that apply): A. The need to identify the bacteria causing the infection B. Limitations due to international patents by scientists C. a narrow host range of bacteriophages D. Difficulties in purifying bacteriophages E. Bacteriophages are rare in nature.
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Bacteriophages are viruses that infect bacteria. In an experiment, bacteriophages were labeled with either radioactive phosphorus or radioactive sulfur. The labeled bacteriophages were incubated with bacteria for a brief amount of time and then removed. The infected bacterial cells were found to contain significant amounts of radioactive phosphorus but not radioactive sulfur. Based on the results of the experiment, which of the following types of molecules did the bacteriophages most likely inject into the bacterial cells? (A) Simple carbohydrate (B) Amino acid (C) DNA (D) Polypeptide
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