Help pls Nitrogeneous base.III. Frederick Griffith (Early 1930s)Frederick Griffith conducted an experiment using 2 different strains of the bacterium Streptococcus pneumoniae. As you can see inthe diagram below, the S strain bacteria killed the mice and the R strain bacteria did not kill the mice. What is the difference instructure between the S and R strains? Why does the dead mouse contain living S strain when only dead S strain wasinjected?EXPERIMENTLiving S cells(control)Heat-killedS cells(control)Mixture ofheat-killedS cells andliving R cellsLiving R cells(control)S Strain = pathogenic/virulentR Strain = non pathogenic0080RESULTSMouse diesMouse healthy Mouse healthy Mouse diesLiving S cells

Answered: Frederick Griffith conducted an…

Human Anatomy & Physiology (11th Edition)

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Nitrogeneous base.
III. Frederick Griffith (Early 1930s)
Frederick Griffith conducted an experiment using 2 different strains of the bacterium Streptococcus pneumoniae. As you can see in
the diagram below, the S strain bacteria killed the mice and the R strain bacteria did not kill the mice. What is the difference in
structure between the S and R strains? Why does the dead mouse contain living S strain when only dead S strain was
injected?
EXPERIMENT
Living S cells
(control)
Heat-killed
S cells
(control)
Mixture of
heat-killed
S cells and
living R cells
Living R cells
(control)
S Strain = pathogenic/virulent
R Strain = non pathogenic
00
80
RESULTS
Mouse dies
Mouse healthy Mouse healthy Mouse dies
Living S cells

Expert Solution

Step 1

Frederick Griffith performed an experiment using two different Strains of bacteria. The S strain was virulent and resulted in the death while R strain was nin virulent which remained the mouse as healthy.

When the S strain was killed and inserted along with the live R strain bacteria it resulted in the death of mouse. This was due to the structure difference in both the microbes.

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