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Why was the mixture of S bacteria and R BACTERIA virulent?
The live R bacteria acquired a capsule and became live, virulent S bacteria.
How would use virulent be used in a sentence?
this bacteria is virulent strain
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.
How did Griffith experiments show that hereditary factor was involved in the bacterial transformation?
Griffith's experiments, conducted in the 1920s, demonstrated that non-virulent strains of Streptococcus pneumoniae could be transformed into virulent strains when exposed to heat-killed virulent bacteria. He observed that when live non-virulent bacteria were mixed with the heat-killed virulent bacteria, some of the non-virulent bacteria took up the hereditary material from the dead bacteria, becoming virulent themselves. This transformation indicated the presence of a "hereditary factor" that carried the information necessary for virulence, laying the groundwork for the later discovery of DNA as the genetic material.
What was the molecule that caused transformation in Griffith's pneumonia experiment?
The molecule that caused transformation in Griffith's pneumonia experiment was DNA. Specifically, it was the transfer of DNA from heat-killed virulent bacteria to live non-virulent bacteria that resulted in the transformation of the non-virulent bacteria into a virulent form.
Is capsulated bacteria are virulent or non virulent?
Capsulated bacteria are usually more virulent compared to non-capsulated bacteria. The presence of a capsule helps the bacteria evade the host's immune system and promotes its ability to cause disease. Capsules can provide protection against phagocytosis, making the bacteria more likely to establish an infection.
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 did Avery and Griffith prove?
Avery and Griffith proved that DNA is the molecule responsible for carrying genetic information. In their 1944 experiments, they showed that the transformation of non-virulent bacteria into virulent forms was caused by the transfer of DNA from heat-killed virulent bacteria to live non-virulent bacteria. This work built on Griffith's earlier findings and established the foundational concept that DNA serves as the genetic material in organisms.
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."
What does translation?
What does virulent mean
