Which of the following are correct about Griffith's transformation experiment? He used radioactive isotopes to track DNA. He was studying two types of viruses. Heat-killed S-strain bacteria was deadly by itself. He concluded that DNA was the genetic material. Combining heat-killed S-strain and live R-strain caused the transformation.
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Instead, he used different strains of bacteria to observe the transfer of genetic material. Show more…
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Frederick Griffith documented bacterial transformation. Which statement is true concerning his experiments? DNA that was not contained within a live cell caused the death of the host organism. DNA from dead Streptococcus cells entered live cells and altered the live cell's characteristics. The two strains of Streptococcus were visually indistinguishable. Heat treatment of the Streptococcus strains destroyed the DNA molecules.
Sri K.
Which of the following is not correct for bacterial transformation? a. Artificial transformation is used in cloning procedures. b. Avery was able to transform live noninfective bacteria with DNA from dead infective bacteria. c. The cell wall and plasma membrane must be penetrated for transformation to proceed. d. A virus is required for the process. e. Electroporation is a form of artificial transformation used to introduce DNA into cells.
In Griffith’s experiments, transformation occurred when a small piece of A. protein from the harmful strain of bacteria caused a mutation in the harmless strain. B. DNA from the harmful strain of bacteria changed the characteristics of the harmless strain. C. protein from the harmless strain of bacteria caused a mutation in the harmful strain. D. DNA from the harmless strain of bacteria caused a mutation in the harmful strain.
Suman K.
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