Biology

Biology, 15.07.2019 08:50, SmolBeanPotato

In 1928, fredrick griffith was able to induce a nonpathogenic strain to become pathogenic. he referred to a transforming factor as the cause. true false

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Biology, 25.06.2019 18:30, ParkBecca

In 1928, frederick griffith conducted an experiment in which he injected mice with different kinds of bacteria. when bacteria that cause disease (pathogenic) were injected in healthy mice, these mice got sick and died. other types of bacteria (nonpathogenic) did not cause the mice to die. griffith took the dna from dead pathogenic bacteria and transferred it into living nonpathogenic bacteria. these altered bacteria were then injected into healthy mice. the mice died of the same disease caused by the pathogenic bacteria. based on this information, which statement would be a valid conclusion? a) when an organism dies, the dna changes; it no longer provides the same genetic information. b) when dna from one organism is transferred to another organism, the dna no longer functions. c) dna in different types of bacteria carries exactly the same type of information. d) when dna from one organism is transferred to another organism, it can give new traits to the second organism.

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Biology, 27.07.2019 06:30, jasonskatesallday

In his transformation experiments, what did griffith observe? 6) a.mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic. b.mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form. c.mice infected with a pathogenic strain of bacteria can spread the infection to other mice. d.mutant mice were resistant to bacterial infections. e.infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.

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Biology, 13.09.2019 04:10, Brittany0512

In his work with pneumonia-causing bacteria and mice, griffith found that a. the protein coat from pathogenic cells was able to transform nonpathogenic cells. b. heat-killed pathogenic cells caused pneumonia. c. some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic. d. the polysaccharide coat of bacteria caused pneumonia.

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Biology, 05.10.2019 19:30, cylertroutner

True or false in 1928, fredrick griffith was able to induce a non pathogenic strain to become pathogenic. he refereed to a transforming factor as the cause.

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