Griffith conducted his transformation experiments on?
E. Coli
Tetracoccus
Diplococcus
Penicillin
Related Questions
What was the key observation in the Hershey-Chase experiment that supported DNA as the genetic material?
Radioactive sulfur (S) was found inside the bacterial cells.
Radioactive phosphorus (P) was found inside the bacterial cells.
Both radioactive sulfur and phosphorus were found inside the bacterial cells.
Neither radioactive sulfur nor phosphorus were found inside the bacterial cells.
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 their side by side experiments Hershy and chase incorporated into?
Bacterial DNA
Protein Capsid of Phage
Cytoplasm of bacteria
Phage DNA
The definitive evidence establishing DNA as the genetic material was derived from the experiments of:
James Watson and Francis Crick
Frederick Griffith
Oswald Avery, Colin MacLeod, and Maclyn McCarty
Alfred Hershey and Martha Chase
Which of the following is NOT a key feature of the transforming principle, as demonstrated by Griffith?
It is composed of protein.
It can change the characteristics of bacteria.
It can be passed from one generation of bacteria to the next.
It was later identified as DNA.
The Hershey-Chase experiment provided definitive evidence that DNA is the genetic material. Which of the following best describes their experimental approach?
Observing bacterial transformation using purified protein extracts
Analyzing the chemical composition of chromosomes
Radioactively labeling phage DNA and protein to track their fate during infection
Studying the inheritance patterns of mutant bacteria
Which enzyme was used by Avery, MacLeod and McCarty to prove that DNA is the genetic material?
RNase
Protease
DNase
Lipase
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
The Hershey-Chase experiment utilized radioactive isotopes to label different components of bacteriophages. Which of the following combinations accurately reflects the isotopes used and the components they labeled?
32P for protein and 35S for DNA
35S for both DNA and protein
32P for DNA and 35S for protein
32P for both DNA and protein
Griffith conducted his transformation experiments on?
E. Coli
Tetracoccus
Diplococcus
Penicillin
