Alfred Hershey and Martha Chase Examined Transformation Using Bacteriophage (Bacterial

question 42

Multiple Choice

Alfred Hershey and Martha Chase examined transformation using bacteriophage (bacterial DNA virus) and bacterial cells.If phage are labeled with radioactive phosphate and allowed to infect bacterial cells,the radioactive phosphate will be localized to:

• A)the inside of infected cells (in phage DNA).
• B)the outside of infected cells (in phage ghosts).
• C)newly synthesized phage viruses in the host bacterial cell.
• D)No radioactivity will remain after infection.
• E)The phosphate will be metabolically consumed,and therefore the radioactivity will be destroyed.

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