U1 KA3 : DNA and the production of Proteins Flashcards
1
Q
What is the structure of a DNA molecule?
A
- double stranded helix, with a double sugar-phosphate backbone, held together by complimentary base pairs.
2
Q
What are the Base Pairs?
A
- Adenine + Thymine
- Cytosine + Guanine
3
Q
What does a DNA molecule contain?
A
- the genetic information for making proteins.
4
Q
What is a Gene?
A
- a section of DNA that codes for a protein.
5
Q
What does the DNA base sequence of a gene determine?
A
- the amino acid sequence in a protein.
6
Q
What is mRNA?
A
- messenger RNA is a single stranded molecule that carries a copy of the genetic code of a DNA molecule that codes for a protein.
7
Q
What does the mRNA travel, and what does it do?
A
- travels from the nucleus to the ribosome, where a protein is assembled from amino acids.
