Griffith hypothesized that a chemical component from the virulent S cells had somehow transformed the R cells into the more virulent S form.
Bacteriophages are the viruses which affects bacteria.
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.
You can find bacteria almost everywhere. There is not one preferred environment for them all.
It is usually performed by soil-living bacteria, such as nitrobacter.
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.