Nucleotides Flashcards
1
Q
What is the rule for base pairing?
A
C with G, A with T/U
2
Q
Name the purines
A
adenine and guanine
3
Q
Name the pyrimidines related to DNA
A
cytosine, thymine and uracil
4
Q
what is the linkage between individual nucleotides?
A
phosphodiester bond
5
Q
How many hydrogen bonds exist between cytosine - guanine nucleotides?
A
3
6
Q
How many hydrogen bonds exist between adenosine and thymine/ uracil nucleotides?
A
2
7
Q
What are the names and functions of the three parts of a nucleotide?
A
- Sugar (deoxyribose) acts as scaffold to hold the base 2. Base: interacts with other bases 3. Phosphate: linker
8
Q
what is a base + sugar called?
A
nucleoside
9
Q
What bond exists between a base and a deoxyribose?
A
glycosylic bond
10
Q
A
thymine
11
Q
A
cytosine
12
Q
A
adenine
13
Q
A
guanine
14
Q
A
uracil
15
Q
Adenine + sugar =
A
Adenosine
16
Q
Guanine + sugar =
A
Guanosine
17
Q
Cytosine + sugar =
A
Cytidine
18
Q
Thymine + sugar =
A
Thymidine
19
Q
Uracil + sugar =
A
Uridine
20
Q
A
