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Why is the capsulated form of Streptococcus peneumoniae more virulent than the noncapulated form?
Fmolden
I believe all forms of strep pneumoniae are encapsulated. The polysaccharide capsule dictates the virulence factor and there are many different serotypes. Each type has a different prevalence and level of virulence, as well as different resistance to drugs.
If I had to answer your question (for homework?) I would say that encapsulation provides superior resistance to environmental threats, giving the organism a better chance of survival when not in optimal conditions.
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∙ 13y ago
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Is capsulated bacteria are virulent or non virulent?
capsule increases poisonous effect of bacteria thus cause more diseases so capsulated bacteria are virulent
Why is it important to know whether a bacterium is motile or not?
Bacteria can be capsulated or non-capsulated. When it has no capsule (barrier), it is non-virulent. When it is capsulated, it is extremely virulent. Bacterial capsule is made of Glycocalyx - a sugar coat ( e.g. mix of Glycopeptide, peptide and polysaccheride) is well organized adheres strongly to bacterial cell membrane in such a way that no antigen or anibody can penetrate the bacterial cell membrane; allowing the bacteria extremely virulent and lethal.
What did Avery's theory provide evidence for?
Ostwald T. Avery's experiment was an extension of the works of Griffith's. Griffith's experiment using virulent and avirulent Streptococcus pneumoniae (which had different colony characteristics) proved that it was possible for the heat killed virulent Streptococcus pneumoniae to pass on the genetic information for formation of smooth colonies to avirulent strains. Avery, Mc Leod and Mc Carty conclusively found out that the genetic material responsible for transfer of characteristics between the strains was DNA. This was achieved by incubating the cell lysate of virulent Streptococcus with proteases, RNAses and DNAses separately before mixing it with avirulent strains. It was found that only when the lysate was incubated with DNAses did the transfer of smooth colony formation characteristic from the virulent strain to the avirulent strain fail to occur.
What is the antonym of virulent?
The antonyms of virulent: gentle; kind; nice; harmless; healthy; nonpoisonous
Why was the mixture of S bacteria and R BACTERIA virulent?
The live R bacteria acquired a capsule and became live, virulent S bacteria.
Is capsulated bacteria are virulent or non virulent?
capsule increases poisonous effect of bacteria thus cause more diseases so capsulated bacteria are virulent
Why is it important to know whether a bacterium is motile or not?
Bacteria can be capsulated or non-capsulated. When it has no capsule (barrier), it is non-virulent. When it is capsulated, it is extremely virulent. Bacterial capsule is made of Glycocalyx - a sugar coat ( e.g. mix of Glycopeptide, peptide and polysaccheride) is well organized adheres strongly to bacterial cell membrane in such a way that no antigen or anibody can penetrate the bacterial cell membrane; allowing the bacteria extremely virulent and lethal.
Can you catch strep throat?
Strep throat is caused by bacteria of the genus Streptococcus. You catch virulent forms from other people who cough near you, or if you kiss them.
What is a virulent phages?
phages of virulent.
What did Avery's theory provide evidence for?
Ostwald T. Avery's experiment was an extension of the works of Griffith's. Griffith's experiment using virulent and avirulent Streptococcus pneumoniae (which had different colony characteristics) proved that it was possible for the heat killed virulent Streptococcus pneumoniae to pass on the genetic information for formation of smooth colonies to avirulent strains. Avery, Mc Leod and Mc Carty conclusively found out that the genetic material responsible for transfer of characteristics between the strains was DNA. This was achieved by incubating the cell lysate of virulent Streptococcus with proteases, RNAses and DNAses separately before mixing it with avirulent strains. It was found that only when the lysate was incubated with DNAses did the transfer of smooth colony formation characteristic from the virulent strain to the avirulent strain fail to occur.
How would use virulent be used in a sentence?
this bacteria is virulent strain
A sharp criticism can be made with an remark?
virulent
Can you use Virulent in a sentence?
he came down with a virulent type of disease
How could you use the word virulent in a sentence?
Smallpox is a virulent disease.
What does anti virulent mean?
Virulent means very posinous or dangerous.
How would you use the word virulent in a sentence?
Virulent means actively poisonous. You could use it in a sentence as, "the man had a virulent snake bite."
Can you give a sentence for the word virulent?
The judge had a virulent criticism after his affair with the intern.
