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10 Jan 2018

4. The table is from work done by Oswald Avery’s research group regarding transformation. The “transforming principle preparation” column on the left refers to the heat-treated smooth (virulent) bacteria. SIII refers to smooth bacteria. R refers to rough (nonvirulent). (this table can be search on google by typing the question. Please search to view it because I can't be able to post it. Thanks)

a. Which of the following best describes transformation?

A. The uptake of foreign material into a cell.

B. The conversion of a non-disease-causing bacteria into a disease causing one.

C. The transfer of novel DNA into a cell.

b. Which of the following best describes how Avery contributed to our understanding that DNA is the genetic material based on his transformation experiments?

A. He showed that non-disease causing bacteria could become disease causing bacteria.

B. He showed that addition of a nuclease to a cell sample could block transformation.

C. He showed that addition of a ribonuclease to a cell sample could block transformation.

D. He showed that addition of a protease to a cell sample could block transformation.

c. Which of the following conclusions would you make based on the table above? Select all that apply. A. DNA, and not RNA or protein, is our genetic information.

B. More “transforming principle preparation” results in more transformation.

C. All replicates of the experiment produced identical results.

D. Without “transforming principle preparation” added to the reaction, transformation cannot happen.

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Jamar Ferry
Jamar FerryLv2
13 Jan 2018

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