Why did Griffith call the process he observed transformation?
Griffith called the process he observed transformation because the mouse had been transformed. the harmful bacteria had been transformed. the harmless bacteria had been transformed.
What happened when heat killed S strain was injected into a mouse?
When this strain is injected into a mouse, the mouse gets pneumonia and dies. When heat-killed smooth cells are injected into a mouse, the mouse lives. Rough strain & heat-killed smooth strain. When these two types of cells are injected into a mouse as a mixture, the mouse gets pneumonia and dies.
What happened when Griffith injected mice with the pneumonia causing strain of bacteria?
What happened when Griffith injected mice with a mixture of heat-killed, pneumonia- causing bacteria and live bacteria of the harmless type? The mice got pneumonia and many died. He used enzymes that destroyed various molecules from the heat-killed bacteria, including lipids, proteins, carbohydrates, and RNA.
Why did Hershey and Chase use the T2 virus?
In order to show that proteins carry genetic information, Hershey and his lab technician, Martha Chase, decided to track the transfer of proteins and DNA between a virus and its host. For their experiment, they chose to use the T2 bacteriophage as the vehicle for delivering genetic material.
What happened when Griffith injected mice with the harmless R strain bacteria alone?
2-What happened when Griffith injected mice with the harmless, R-strain bacteria alone? THE MICE DEVELOPED PNEUMONIA. Only $2.99/month. 4-What did Avery conclude caused transformation?
What was the most significant conclusion of Griffith’s experiments with pneumonia in mice?
What was the most significant conclusion of Griffith’s experiments with pneumonia in mice? There is a substance present in dead bacteria that can cause a heritable change in living bacteria.
What was Griffith trying to determine by conducting this experiment?
Griffith’s famous 1928 experiment showed us that bacteria can distinctly change their function and form through transformation. Transformation is the process which describes one thing changing into another. In his experiment, Griffin injected two types of streptococcus pneumoniae, Type III-S and Type II-R, into mice.
What was the most important concept demonstrated by Griffith’s experiment?
Griffith developed the concept of the transforming principle. The prinicple was able to transform a non-pathogenic bacteria into a pathogenic strain. Changing phenotype is one of the characteristics of the hereditary material. Griffith called the factor that changed the phenotype the tranforming principle.
What is a common and relatively inexpensive method for estimating numbers of phage?
Chapter 13
| Question | Answer |
|---|---|
| What is a common relatively inexpensive method for estimating numbers of phage? | plaque assay |
| What is the best method to use when attempting to culture bacteriophages? | mix the phages with bacteria and liquid method media, pour over a plate |
Does bacteriophage have DNA or RNA?
Bacteriophage have either DNA or RNA as their genetic material, in either circular or linear configuration, as a single- or a double-stranded molecule.