Avery, MacLeod, and McCarty purified the 'transforming principle' identified by Griffith. Which treatment specifically abolished the transforming activity, proving its chemical nature?
Protease
Ribonuclease
Deoxyribonuclease
Lipase
Related Questions
Which one of the following is correctly matched?
Frederick Griffith - Discovered the phenomenon of transformation
Linus Pauling - Isolated DNA for the first time
Francis Crick - Proposed one gene-one polypeptide hypothesis
George Beadle - Proposed the concept of inborn errors
If Hershey and Chase had found radioactive sulfur () inside the bacteria instead of radioactive phosphorus (), what would have been the conclusion of their experiment?
DNA is the genetic material.
Protein is the genetic material.
Both DNA and protein are the genetic material.
Neither DNA nor protein is the genetic material.
Which scientist's experiment definitively proved that DNA is the genetic material?
Hershey and Chase
Avery, MacLeod, and McCarty
Griffith
Meselson and Stahl
If Hershey and Chase had found both 32P and 35S inside the bacteria, what would have been the conclusion of their experiment regarding the genetic material?
DNA is the genetic material
Protein is the genetic material
Both DNA and protein are the genetic material
The experiment would be inconclusive regarding which molecule is the genetic material
In his bacteriophage experiments, Hershey and Chase demonstrated that DNA is genetic material in
TMV
bacteriophage
Which observation from Griffith's experiment with Streptococcus pneumoniae provided the strongest evidence for the existence of a 'transforming principle'?
Live non-virulent bacteria did not cause disease in mice.
Heat-killed virulent bacteria did not cause disease in mice.
Live virulent bacteria caused disease in mice.
Heat-killed virulent bacteria, when mixed with live non-virulent bacteria, caused the latter to become virulent.
In Hershey and Chase's experiment, what was the key observation that supported DNA as the genetic material?
Radioactive sulfur () was found inside the bacteria.
Radioactive phosphorus () remained outside the bacteria.
Both radioactive sulfur () and phosphorus () were found inside the bacteria.
Radioactive phosphorus () was found inside the bacteria.
Radioactive Phages were allowed to attach to?
Bacteriophage
E. Coli
Salmonella
HIV Virus
If a segment of double-stranded DNA has 20% adenine, what percentage of guanine would it contain?
20%
30%
40%
50%
In the Hershey-Chase experiment, why was radioactive sulfur (35S) used to label phage proteins?
Sulfur is a component of both DNA and protein
Sulfur is a component of proteins but not DNA
Sulfur is easily detectable in bacterial cells
Sulfur is a common component of bacterial cell walls
