DNA structure Flashcards
1
Q
Which carbon atom of pentose is connected to the Phosphate group
A
C5
2
Q
Which carbon of pentose is connected to Base
A
C1
3
Q
Which carbon determines if it is ribose/deoxyribose
A
C2
4
Q
Name the 2 pyramidines
A
Thymine, Cytosine, Uracil (Any 3)
5
Q
Name the 2 purines
A
Adenosine, Guanine
6
Q
Name the 2 pyramidine ribonucleoside
A
uridine, cytidine
7
Q
Name the 2 purine deoxynucleotide
A
deoxyadenylate, deoxyguanylate
8
Q
How many H bonds are formed between A and T
A
2
9
Q
What’s the difference between Uracil and Thymine
A
U has 1 less methyl group than T does
10
Q
How many H bonds are formed between C and G
A
3
11
Q
What is DNA wrapping around when condensed
A
histones
12
Q
Name the 4 types of Histones
A
H2A,H2B, H3,H4
13
Q
What’s their function
A
They can control which part of DNA is exposed to Polymerase
