Question

what technique did hershey and chase use to track proteins and dna from viruses?
a. radioactive labeling
b. x - ray diffraction
c. paper chromatography
d. ultraviolet spectroscopy

Explanation:

Hershey and Chase used radioactive labeling. They labeled the proteins (with \(^{35}\text{S}\)) and DNA (with \(^{32}\text{P}\)) of viruses. Then they tracked where these labeled components went during the infection of bacteria. X - ray diffraction (used by Franklin to study DNA structure), paper chromatography (for separating mixtures), and ultraviolet spectroscopy (for analyzing substances based on UV light absorption) are not the techniques they used for this specific tracking of viral proteins and DNA.

Answer:

A. Radioactive labeling