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The S bacteria are surrounded by a capsule, so it is not engulfed by the host's white blood cells. That means that it is able to proliferate and spread.
The R bacteria lack the capsule (like the mutant S bacteria), so the white blood cells are able to detect and eliminate them.
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Why were the S bacteria but not the R bacteria virulent?
segovia redolfo segovia redolfo
Who is the Scientist discovered nonvirulent bacteria transformed into virulent bacteria?
Frederick Griffith discovered the phenomenon wherein exogenous DNA of heat killed virulent bacteria was taken up by a similar but non-virulent bacteria. This resulted in the transformation of the living bacterial cells into the virulent variety. This was prior to the understanding that DNA was the genetic material and the hereditary information passed onto the living bacteria was referred to as the "transforming principle." Source : Russell "iGenetics : A Molecular Approach."
What is the difference between r and s bacteria?
r is rough bacteria and s is smooth bacteria. smooth bacteria causes disease and makes a thick outer capsule.
Who studied the s and r type of bacteria?
Griffith
What is the name of the process that was involved in changing griffith's r bacteria to s bacteria?
Transformation
Why was the mixture of S bacteria and R BACTERIA virulent?
The live R bacteria acquired a capsule and became live, virulent S bacteria.
Why was the mixture of heat killed s bacteria and r bacteria virulent?
The live R bacteria acquired a capsule and became live, virulent S bacteria.
Why were the S bacteria but not the R bacteria virulent?
segovia redolfo segovia redolfo
What did Griffith find to be true after his experiments with the s and r strain of bacteria?
Griffith hypothesized that a chemical component from the virulent S cells had somehow transformed the R cells into the more virulent S form.
What did fred griffith find to be true after his experiment with the S and R strains of bacteria?
Griffith hypothesized that a chemical component from the virulent S cells had somehow transformed the R cells into the more virulent S form.
What does virulent bacteria mean?
Virulent bacteria are ones that are able to cause disease. Examples of potentially virulent bacteria are Staphylococcus aureus and Neisseria gonorrhea.
Is capsulated bacteria are virulent or non virulent?
capsule increases poisonous effect of bacteria thus cause more diseases so capsulated bacteria are virulent
How would use virulent be used in a sentence?
this bacteria is virulent strain
How Griffith prooved DNA as genetic material?
proved transforming principle not proteinchanged non-virulent bacteria into virulentbacteria by mixing with heat killed virulent bacteria
Who is the Scientist discovered nonvirulent bacteria transformed into virulent bacteria?
Frederick Griffith discovered the phenomenon wherein exogenous DNA of heat killed virulent bacteria was taken up by a similar but non-virulent bacteria. This resulted in the transformation of the living bacterial cells into the virulent variety. This was prior to the understanding that DNA was the genetic material and the hereditary information passed onto the living bacteria was referred to as the "transforming principle." Source : Russell "iGenetics : A Molecular Approach."
What is the difference between r and s bacteria?
r is rough bacteria and s is smooth bacteria. smooth bacteria causes disease and makes a thick outer capsule.
What was the different about the S bacteria and R bacteria?
the conversion of R forms of one type into S forms of a different type
