Chapter 8--> From DNA and Protein Flashcards
Who found a ‘transforming principle’
Fredrick Griffith
S form is deadly while the R form was
Not deadly
What happened to the mouse injected with heat killed S bacteria?
The mouse died
Oswald Avery
identified DNA as the transforming principle
Avery isolated and…
Purified Griffith’s transforming principle
Alfred Hershey and Martha Chase confirmed that…
DNA is the genetic material
Hershey and Chase studied viruses that…
infect bacteria, or bacteriophages
Tagged DNA was found inside the bacteria;
tagged proteins were not
DNA structure is the…
same in all organisms
DNA is composed of what four types of nucleotides
- Phosphate Group
- Deoxyribose Sugar
- Nitrogen-containing base
What are the four nitrogen changing bases?
1.Thymine
2.Adenine
3.Cytosine
4.Guanine
Double Helix is made up of a…
Sugar-phosphate backbone on the outside with bases on the inside
A=
T
C=
G
The backbone is connected by…
Covalent bonds