Question

Why were radioactive sulfur and phosphorous used to label bacteriophage in Hershey and Chase's experiments?

a) Radioactive sulfur labeled the DNA of bacteriophages. Phosphorus labeled their protein coat.
b) Radioactive sulfur labeled the protein coat of bacteriophages. Phosphorus labeled their DNA.
c) Both radioactive elements labeled the protein coat of bacteriophages.
d) Both radioactive elements labeled the DNA of bacteriophages.

Answer 1

Radioactive sulfur was used to label the protein coat and radioactive phosphorus was used to label the DNA of bacteriophages in Hershey and Chase's experiments.

Step-by-step explanation:

Hershey and Chase used radioactive sulfur and phosphorus to label bacteriophages in their experiments. They labeled the protein coat of the bacteriophages with radioactive sulfur and the DNA with radioactive phosphorus. The purpose of this labeling was to track the movement of these radioactive elements and determine whether the DNA or protein was transferred from the bacteriophages to the bacterial cells during infection.