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∙ 14y agoGriffith hypothesized that a chemical component from the virulent S cells had somehow transformed the R cells into the more virulent S form.
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∙ 14y agoFred Griffith found that genetic information could be transferred between different strains of bacteria, specifically between the harmless R strain and the virulent S strain of bacteria. This led to the discovery of transformation, a process where genetic material is exchanged between bacteria.
You can find non-pathogenic freeze-dried Staphylococcus bacteria with growth medium from scientific supply companies or online biological supply stores. These companies offer a variety of non-pathogenic bacterial strains for research and educational purposes. Make sure to follow appropriate safety protocols when working with bacteria in a lab setting.
You can find names for viruses and bacteria in a medical health book. A good source is a book called Bacteria and Viruses by Leslie J. Lemaster.
Hello by doing Resonance Column experiment, Kundt's tube and Quinkes tube experiment.
It is usually performed by soil-living bacteria, such as nitrobacter.
Absolutely NOT, bacteria do not contain a nucleus!!
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice.
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice.
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice.
The difference between "walking pneumonia" and "true pneumonia".
it's called transformation!! lol
Griffith hypothesized that a chemical component from the virulent S cells had somehow transformed the R cells into the more virulent S form.
New strains, from my understanding, are mutated bacteria. The problem with bacteria is it can pass it's genes to the next generation even after death. This is a problem because, over time, they can develop methods to fight off anti-biotics (mutation) and will thus become a new strain. I think the best way to prevent new strains would be to find a way to damage the DNA (anti-biotics do not damage DNA) of the bacteria, that way the cell would die within itself, leaving no way for genes to be past on.
The genetic mateial is made of DNA and not of proteins
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice.
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice.
The amount of thymine equals the amount of adenine in DNA.
To find out, he took a culture of these cells, heated the bacteria to kill them, and injected the heat-killed bacteria into the mice. The Mice survived, suggesting that the cause of pneumonia was not a chemical poison released by the disease-causing bacteria.