Biology 12.1

Multiple Choice

The Hershey-Chase experiments on bacteriophages showed that genetic information is carried in

• proteins

• bacteria

• DNA

• RNA

Multiple Choice

What radioactive isotopes were used in the Hershey-Chase experiments?

• carbon-14 & iodine-132

• carbon-14 & sulfur-35

• carbon-14 & phosphorus-32

• sulfur-35 & phosphorus-32

Multiple Choice

What was the significance of the radioactive isotopes Hershey and Chase chose?

• both sulfur & phosphorus are found in large amounts in DNA

• both sulfur & phosphorus are found in large amounts in proteins

• phosphorus is abundant in DNA, while sulfur is abundant in protein

• phosphorus is abundant in protein, while sulfur is abudnant in DNA

Multiple Choice

The role of DNA includes all of the following EXCEPT:

• store genetic information in a cell

• copying genetic information ina cell

• translating genetic information ina cell

• transmitting genetic information in a cell

Multiple Choice

Avery's team repeated Griffith's experiments because they wanted to

• determine which molecule in the heat-killed bacteria was the transforming factor

• determine which gene in the heat-killed bacteria was the transforming factor

• determine which process in the heat-killed bacteria was the transforming factor

• determine which enzyme in the heat-killed bacteria was the transforming factor