Alfred Hershey and Martha Chase examined transformation using bacteriophage (bacterial DNA virus)and bacterial cells.Sulfur was used to label cellular components in this experiment because of its presence in the amino acid(s):
A)histidine.
B)methionine and cysteine.
C)tyrosine.
D)glycine.
E)serine.

Question

Quizplus · Accepted Answer

Methionine and cysteine are the amino acids that contain sulfur. By labeling the viral proteins with radioactive sulfur, Hershey and Chase were able to determine that viral DNA, and not protein, was the genetic material responsible for transformation in bacteria.

Alfred Hershey and Martha Chase Examined Transformation Using Bacteriophage (Bacterial