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What effect did an injection of dead S bacteria have on the mice griffith studied?
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∙ 13y ago
The mice died
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∙ 13y ago
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What effect did an injection of heat-killed s bacteria have on mice griffith studied?
the mice grew sick and died.(totally CORRECT, I got this out of a worksheet the teacher gave me so you can count on this answer... OH YES YOU'RE VERY WELCOME, ANYTIME)
What effect did an injection of live R bacteria mixed with heat killed S bacteria have on the mice?
The mice injected with mixture died
What effect does Mercurochrome have on bacteria?
It will affect the growth of the bacteria.
What is the effect of freezing conditions on bacteria and fungi?
The effect would be that the bacteria and fungi would rot dead
What was the purpose of Frederick Griffith's studies?
Griffith discovered transformation. Transformation is what we would today describe as the motion of DNA from one cell to another. But in those days, it was not known that DNA was the genetic material. All that was known was that something caused transformation.S virulent strains of Streptococcus pneumoniae were injected into mice. The mice promptly perished from pneumonia due to the bacterial virulence. Second, mice had R nonvirulent strain of Streptococcus pneumoniae injected. The mice were fine afterwards due to the nonvirulence of the bacterium. Heat killed S virulent bacteria had no effect either. However something rather sinister happened when S virulent (heat killed) and R nonviruent were mixed in together and entered the mice.The S virulent were dead and could do nothing. But it appeared a transforming medium must have traversed from them to the R nonvirulent (live) strain. The R nonvirulent became S virulent and killed the mice ferociously. Something very odd had happened. A transforming principle. Transformation had been discovered.nicely put, but you missed some points.Fredrick Griffith was a bacteriologist who discovered transformation. Transformation is what we would today explain as the movement of DNA from one cell to another. But back in those days, DNA was not known as a genetic material; all they know was that something caused transformation. In his experiment, Griffith found that if the dangerous S bacteria strains of Streptococcus pneumonia (that he put in a capsule to stop the bodies defense systems) were injected into mice, then the mice quickly died from pneumonia because of the bacterial poisoning. The other mice that were infected with the R bacteria were fine. In order to see if the capsules were killing the mice, Griffith injected dead S bacteria in the mice, but that had no effect. So, afterwards, he injected the mice with heat-killed S bacteria, but that had no effect either. So now, Griffith knew that the capsule did not kill the bacteria. The purpose of the heat-killed bacteria was so they could no longer reproduce. However something pretty disturbing happened when the previously harmless heat-killed S bacteria and previously harmless R bacteria were mixed in together and injected into the mice, the mice died. Griffith, mystified, checked the blood of the dead mice and found that the harmless R bacteria had aqquierd capsules. So, in other words the harmless R bacteria had become the harmful S bacteria. Griffith had discovered what we now call "transformation".
What effect did an injection of dead S bacteria have on mice Griffith studied?
The mice died
What effect did an injection of heat-killed S bacteria have on the mice Griffith studied?
the mice grew sick and died.(totally CORRECT, I got this out of a worksheet the teacher gave me so you can count on this answer... OH YES YOU'RE VERY WELCOME, ANYTIME)
What effect did an injection of heat-killed s bacteria have on mice griffith studied?
the mice grew sick and died.(totally CORRECT, I got this out of a worksheet the teacher gave me so you can count on this answer... OH YES YOU'RE VERY WELCOME, ANYTIME)
What effect did an injection of live R bacteria mixed with heat killed S bacteria have on the mice?
The mice injected with mixture died
What effect did an inject of heat killed s bacteria have on the mice Griffith studied?
the mice grew sick and died.(totally CORRECT, I got this out of a worksheet the teacher gave me so you can count on this answer... OH YES YOU'RE VERY WELCOME, ANYTIME)
How does each of the areas studied by sociology have an effect on the educational process.?
How doses each of the areas studied by sociology have an effect on the educational process?
What did Griffith discover as a result of his experiments?
Frederick Griffith was a British bacteriologist. In January 1928, he reported what is now known as Griffith's Experiment, the first widely accepted demonstrations of bacterial transformation, whereby a bacterium distinctly changes its form and function.
What effect does Mercurochrome have on bacteria?
It will affect the growth of the bacteria.
Who was Ernest Just and what did he do?
He did not invent anything. He is a famous African American Scientist. He studied Human Fertilization, Artificial Parthenogenesis, the relationship between Bacteria to Human Cells, and the effect of the Environment on Cell Division.
What is the effect of freezing conditions on bacteria and fungi?
The effect would be that the bacteria and fungi would rot dead
What are Four examples of beneficial effect?
nitrogen fixing bacteria bacteria of decay nitrifying bacteria denitrifying bacteria
The effect of capital injection in conutry like Japan?
The effect of capital injection in country like Japan would result into more production. This will also mean that the economy will be boosted and set up for growth.
