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What did griffin observe when he injected into mice a mixture of heat killed disease causing bacteria and live harmless bacteria?
Wiki User
∙ 11y ago
The mice died. This was a fundamental experiment in the history of genetics and helped to establish that DNA was the information and gene carrier for all life. To understand it a little better it's important to know that the heat killed (virulent) bacteria killed the mice when it was living. And the non-virulent did not. But when combined, the non-virulent absorbed some of the DNA from the virulent and was able to make a protective coat that shielded it from the animals immune system... allowing it to kill the mice.
Wiki User
∙ 11y ago
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What is the medical term meaning disease-causing bacteria?
pathogenic bacteria
In an experiment DNA from dead pathogenic bacteria was transferred into living bacteria that do not cause disease These altered bacteria were then injected into healthy mice These mice died of the?
The pathogenic DNA from the dead bacteria became active when combined with the DNA in the live bacteria. When injected into the mice, this reactivated DNA caused the disease and the mice died.
What is a fluid containing weakened disease causing viruses of bacteria?
its a vaccine
What are the effects of antibiotics on disease-causing bacteria?
Certain types of antibiotics will kill certain types of bacteria.
What resistant forms of bacteria are produced by gram resistant bacilli of the most dangerous disease causing bacteria?
endospore
What did Griffth observe when he injected a mixture of heat killed disease causing bacteria and live harmless bacteria into mice?
What did griffith observe when he injected into mice a mixture of heat-killed disease-causing bacteria and live harmless bacteria?
Why do you think Griffith called the mystery material the transforming principle?
The material whatever it was, it contained information that changed the harmless bacteria into disease causing bacteria.
Who Concluded that bacteria could be transformed from harmless to disease by an unknown factor?
In 1927, Fredric Griffith concluded that bacteria could be transformed from harmless to disease-causing by introducing a factor that was not yet identified. This changing factor was eventually discovered to be DNA, the basis for all biological reproduction.
What traps disease causing bacteria?
Mucus in the respiratory tract traps disease-causing bacteria.
What results from Griffiths experiment suggested that the cause of pneumonia was not a chemical poison by the disease-causing bacteria?
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.
What is pneumococcal polysaccharide vaccine?
Pneumococcal polysaccharide disease is caused by a bacteria. It can be deadly but a vaccine was developed to head off the disease before it starts. The vaccine works when a small amount of the bacteria is injected into the patient and his or her immunity works against the disease, causing immunity.
What result from griffith's experiment suggested that the cause of pneumonia was not a chemical poison release by the disease-causing bacteria?
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.
What is a disease causing bacteria?
WHAT DISEAS CAUSE OF BACTERIA? PLEASE ANSWER THIS
The strain of bacteria that caused pneumonia grew into what colonies on culture plates?
The disease-causing strain of bacteria grew into smooth colonies on culture plates, whereas the harmless strain produced with rough edges.
What does it mean to be pathogenic organism?
The word pathogen means to be disease causing.
Is a disease causing a microorganism?
A disease-causing microorganism is called a "pathogen". It can be a bacteria, virus, or fungus.
What are Disease Causing Bacteria or Viruses?
Pathogens
