8.1 experiments of dna Flashcards
What was the procedure for the Griffith experiment?
Griffith used mice and used smooth & rough strains to inject into them, and see what happened. The smooth strain was killing the ice, and the rough strain was letting them survive without a problem. However when the two were mixed on accident, they ended up killing the mice.
His project was actually an attempt to discover the cure for pneumonia.
What was the procedcure of the Avery, MacLeod, and McCarty Experiment?
They wanted to find was the “transforming” factor was in the Griffith experiment, which turned out to be DNA. They found this out but centifuging a liquid, then blending, and treating it with various substances. They ultimatly determined that whenever Dna was removed from the vials, transformation didn’t occur.
What was the procedure of the Hersey & Chase experiment?
They wanted to inject viruses in to bacteria to see what was affecting the growth of a virus. They did this by having two groups- a Protien coating, and a DNA. They found the Protien coating had no effect on the overall spread, while when the DNA was located inside .
What are the parts of a nucleotide?
A phospahte, a nitrogen base, and a deoxyribose (sugar).
What is the structure of a DNA molecule?
Four bases- Adenine, Thymine, Guanine, & Cysotine
Simularites of RNA & DNA:
- made of nucleotides
- same A, T, G groups
- contain phosphates
- same prime groups
- heliex of sugar molecule
Differences of RNA & DNA:
DNA:
- contains a ‘T’ group
- deoxyribose sugar
- oxygen
- two different directions
- two strands (antiparallel)
- will always store genetic information
RNA:
- contains a ‘U’ group
- ribose sugar
- hydroxyl
- folds over itself
- one strand
- runs in same direction
- multiple/flexible functions
If adenine is equal to 26%, what is the percentage of the other groups?
C- 24%
G- 24%
T- 26%
