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
Related Questions
Which of the following is NOT a characteristic of a good genetic material?
Able to replicate accurately
Chemically and structurally stable
Must be easily degradable
Scope for slow changes (mutations)
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 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.
If a segment of double-stranded DNA has 20% adenine, what percentage of guanine would it contain?
20%
30%
40%
50%
Griffith conducted his transformation experiments on?
E. Coli
Tetracoccus
Diplococcus
Penicillin
In Hershey and Chase experiment the viral DNA can be labelled with?
In Griffith's experiment, which strain of Streptococcus pneumoniae caused the death of mice?
S strain (smooth)
R strain (rough)
Heat-killed S strain
Heat-killed R strain
Which experiment definitively proved that DNA, and not protein, carries genetic information?
Griffith's transformation experiment
Avery, MacLeod, and McCarty's experiment
Meselson and Stahl's DNA replication experiment
Hershey and Chase's bacteriophage experiment
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
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.
