DNA Structure Flashcards
1
Q
Experiment for isolating DNA (6 steps)
A
- Cut
- mix water & salt
- mortar crushing -> cell wall
- rest & filter
- washing detergent -> cell membrane (lipids)
- ethanol -> precipitate DNA
2
Q
What does a nucleotide consist of
A
- phosphate group
- deoxyribose
- nitrogenous base
3
Q
Through what are the complementary bases connected?
A
Hydrogen bonds
4
Q
which are purine bases ?
A
- adenine
- guanine
5
Q
Which are pyrimidine bases?
A
- Thymine
- Cytosine
6
Q
Purine bases are bases that consist of ______ rings.
A
Purine bases are bases that consist of two rings.
7
Q
Pyrimidine bases are bases that consist of _____ rings.
A
Pyrimidine bases are bases that consist of one rings.
8
Q
Through what are the phosphate group and deoxyribose connected?
A
Phosphodiesterbond
9
Q
DNA strand that ends with a phosphate group
A
5‘ end
10
Q
DNA strand that ends with hydroxide (OH)
A
3‘ end
11
Q
Through how much hydrogen bonds are Adenine and Thymine connected?
A
Two
12
Q
Through how much hydrogen bonds are Cytosine and Guanine connected?
A
Three
