Chapter 10- Nucleotides and Nucleic Acids Flashcards
1
Q
3 Main components of DNA
A
- Nitrogenous bases
- Pentose
Phosphate
2
Q
Purine Ring system
A
aromatic 6 ring (2 N) attached to aromatic 5 ring (N and NH)
3
Q
Pyrimidine ring
A
Aromatic 6 ring (2 N)
4
Q
What happens when bases become charged?
A
they become soluble in water
5
Q
Are bases soluble in water at pH 7?
A
NO (hydrophobic)
6
Q
Bases can be charged at
A
very low or high pH
7
Q
The double bond of bases absorb at
A
260 nm
8
Q
Difference between RNA and DNA structure
A
2’ OH in DNA and 2’ H in RNA
9
Q
Phosphate’s charge at physiological pH
A
negative
10
Q
Nucleoside
A
Ribose + Base
11
Q
Nucleotide
A
Ribose + Base + phosphate
