DNA structure Flashcards
1
Q
what is a DNA nucleotide?
A
monomer of DNA
2
Q
what is the DNA structure made up of?
A
phosphate
deoxyribose sugar
nitrogenous bases (A, T, C, G)
3
Q
what is Chargaff’s Rule?
A
Adenine pairs with Thymine
Cytosine pairs with Guanine
4
Q
what are the pairs (A-T, C-G) called?
A
complementary base pairs
5
Q
what are the two types of bases?
A
purines and pyrimidines
6
Q
what are purines?
A
double ring structure (adenine, guanine)
7
Q
what are pyrimidines?
A
single ring structure (cytosine, thymine)
8
Q
what are the bonds formed between Adenine and Thymine?
A
A forms 2 hydrogen bonds with T
9
Q
what are the bonds formed between Cytosine and Guanine?
A
C forms 3 hydrogen bonds with G
