UNIT 1 - DNA and Production of Proteins Flashcards
1
Q
describe the structure of DNA.
A
double stranded helix made of phosphate backbones and held together by base pairs.
2
Q
what does DNA carry?
A
genetic information for making proteins.
3
Q
name the four bases.
A
- adenine (A)
- thymine (T)
- guanine (G)
- cytosine (C)
4
Q
what bases pair together?
A
- G & C
* A & T
5
Q
what do three base pairs make?
A
codons - code for an amino acid.
6
Q
what do chains of amino acids make?
A
proteins.
7
Q
how many amino acids are there?
A
20.
