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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?
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.
What else can I help you with?
What is the medical term meaning disease-causing bacteria?
The medical term for disease-causing bacteria is "pathogenic bacteria." These bacteria have the ability to cause infections and illness in the body.
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 are the effects of antibiotics on disease-causing bacteria?
Certain types of antibiotics will kill certain types of bacteria.
What is the name of the process when a person is immunised against a disease by injecting them with an inactive form of a pathogen?
The process is called vaccination. It involves injecting a person with a harmless form of a pathogen, such as a dead or weakened virus or bacteria, to stimulate the immune system to produce an immune response without causing the disease.
What fluid contains weakened disease causing viruses or bacteria?
A vaccine typically contains weakened or inactivated disease-causing viruses or bacteria. This formulation allows the immune system to recognize and develop protection against the specific pathogen without causing the full-blown disease.
What did Griffth observe when he injected a mixture of heat killed disease causing bacteria and live harmless bacteria into mice?
Griffith discovered that the mice still died, indicating that the harmless bacteria had been transformed into disease-causing bacteria by a hereditary factor from the heat-killed bacteria. This experiment laid the foundation for the discovery of bacterial transformation by Avery, MacLeod, and McCarty.
What result from Griffith experiment suggested that the cause of pneumonia was not a chemical poison released by the diseases causing bacteria?
The difference between "walking pneumonia" and "true pneumonia".
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 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 traps disease causing bacteria?
Mucus in the respiratory tract traps disease-causing bacteria.
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 is the medical term meaning disease-causing bacteria?
The medical term for disease-causing bacteria is "pathogenic bacteria." These bacteria have the ability to cause infections and illness in the body.
Why protein injection is better than vaccination?
vaccination is the method to enhance the resistance to a particular disease. in this method a weakened or killed bacteria is injected in the body.in this method there is risk of the bacteria activating again after entering the body and there is a risk of acquiring the particular diseasebut in protein injection method the bacteria is grown in a particular bacterial culture and the protein of the particular disease is extracted from it. and is injected in the body . as the protein cannot cause a disease it is harmless. and also as the body creates antibodies for the particular protein it gets immune to that particular disease. and also there is no risk of acquiring the disease ..as no virus or bacteria is present ..hence protein injection is a better option than vaccination.
Can most bacteria cause disease?
No! The vast majority of bacteria is harmless to human beings. I learned it in my biology class.
