Exploring the Hershey-Chase Experiment and DNA Discovery

What was the main question being debated by the scientific community in the 1940s and 50s?

• The role of RNA in heredity

• The function of proteins

• The nature of the hereditary material

• The structure of DNA

Who were the scientists that first suggested DNA might be the hereditary material in 1944?

• Watson and Crick

• Hershey and Chase

• Avery, MacCleod, and McCarty

• Franklin and Wilkins

What organism did Hershey and Chase choose for their experiments?

• E. coli

• Fruit fly

• Bacteriophage

• Yeast

What are the two main components of a virus?

• RNA and lipid

• DNA and protein

• DNA and lipid

• RNA and protein

What radioactive tags did Hershey and Chase use to label DNA and protein?

• Radioactive iron and calcium

• Radioactive hydrogen and oxygen

• Radioactive sulfur and phosphorus

• Radioactive carbon and nitrogen

What was the purpose of using a Waring blender in the Hershey-Chase experiment?

• To separate the bacteria from the viruses

• To centrifuge the samples

• To mix the radioactive tags

• To label the DNA

What did Hershey and Chase find when they labeled the protein with radioactive sulfur?

• The radioactivity was found in the new viruses

• The radioactivity was found outside the bacteria

• The radioactivity was found inside the bacteria

• The radioactivity was found in the bacterial DNA

Tags

NGSS.HS-LS1-1

What was the result when Hershey and Chase labeled the DNA with radioactive phosphate?

• The radioactivity was found outside the bacteria

• The radioactivity was found in the protein coat

• The radioactivity was found inside the bacteria

• The radioactivity was found in the bacterial membrane

What did Hershey and Chase conclude about the role of DNA in heredity?

• RNA was the hereditary material

• DNA had no function in heredity

• DNA had some function in the multiplication of bacteria

• Protein was the hereditary material

Tags

NGSS.HS-LS3-1

Which scientists published the model of the DNA double helix a year after the Hershey-Chase experiment?

• Watson and Crick

• Hershey and Chase

• Franklin and Wilkins

• Avery and MacCleod