Biology, 16.10.2019 10:00, cristalcastro901
In a series of experiments, griffith infected mice with nonvirulent r-strain bacteria and highly virulent s-strain bacteria. heat-killed s bacteria were nonvirulent. however, the nonvirulent heat-killed s bacteria and the nonvirulent r bacteria together produced a virulent mixture. what did this demonstrate?
a. the molecules present on the outside of bacteria determine whether it's virulent or nonvirulent.
b. a transforming principle in the s bacteria allowed the nonvirulent r strain to become virulent.
c. the translation of proteins, carbohydrates, lipids, and dna is important in determining bacterial virulence.
d. the s-strain bacteria had not been killed completely.
Answers: 3
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