All Lessons Flashcards
This are the invaders that sabotage our cells.
Viruses
He discovered that a transforming factor could be transferred into a bacterial cell.
Frederick Griffith
What do u call a process were some harmless bacteria were converted to disease - causing bacteria.
Transformation
Who uses the bacteriophages to show that DNA is the genetic material.
Alfred Hershey and Martha Chase
This are the viruses that infect bacterial cells.
Bacteriophages
This were labeled with radioactive sulfur to detect proteins or radioactive phosphorus to detect DNA.
Phages
DNA & RNA are polymers called ________??
Polynucleotides
What are the 2 nitrogenous bases?
1.Pyrimidines , cytosine and Thymine
2.Purines ,adenine and guanine
He showed that most samples of DNA the Percentages of Cytosine and Guanine were equal.
Erwin Chargaff
They deduced the secondary structure of DNA with the X-ray crystallography data from Rosalind Franklin and Maurice Wilkins.
James D. Watson & Francis Crick
What are the 3 primary functions that was expected to Fullfill from the time biologist first considered DNA as the genetic material.
- Storage of Genetic Information
2.Replication and Inheritance - Expression of the genetic message
It adds nucleotides to a growing chain.
DNA polymerase
It joins small fragments into a continuous chain.
DNA ligase
They found a series of mutants that could not produce the amino acid arginine.
George Beadle & Edward Tatum
It catalyzes the reaction.
RNA polymerase
What are the stages of transcription.
Initiation
Elongation
Termination
It is a stages of transcription where RNA polymerase binds to a promoter where the helix unwinds and transcription starts.
Initiation
It is a stage of transcription where RNA nucleotides are added to the chain.
Elongation
It is a stage were RNA polymerase reaches a terminator sequence and detaches from the template.
Termination
It contains codons for protein sequences.
mRNA