Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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#5 pls

Transcribed Image Text:Et
11
2
5.
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
RESULTS
Mouse dies
Mouse healthy Mouse healthy Mouse dies
Living S cells
3. What organism(s) did Griffith use in his experiment?
He used 2 different strains of the bacterium Streptococcus pneumoniae and mices.
4. What are the two strains of pneumococcus and the distinguishing characteristics of each?
S Strain pathogenic/virulent
R Strain = non pathogenic
5. How did Griffith determine which strain caused disease
6. In one experiment, Griffith injected heat-killed S strain bacteria into the mice.
a. What was he trying to determine by conducting this experiment?
b. What were the results of this experiment?
li
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