Key Area 3- DNA And Productions Of Proteins Flashcards
what is the structure of DNA
DNA is a double stranded helix. It’s is held together by complimentary base pairs and has hydrogen bonds between the bases
What is DNA
DNA contains the instructions for making proteins within the cell.
What are the 4 bases in DNA
Adenine — thymine
Cytosine — guanine
Where is DNA found
Nucleus
How many genes are in proteins
1 gene= 1 protein
What is a gene
A sector of DNA which codes for a protein
What is the structure of proteins made from
Order of animo acids
What is the made of amino acids made from
Order of DNA bases
How does the DNA get to the protein
DNA> mRNA> Proteins
What is the use of mRNA
Carries complimentary copy of DNA from the nucleus to the ribosomes for proteinsynthesis
What is the structure of mRNA
mRNA is a single stranded helix
Why does the mRNA go to the protein instead of the DNA
Unlike the DNA that isn’t allowed to leave the nucleus the mRNA can leave the nucleus and travel to the ribosomes where the proteins is synthesised
What does the base sequence determine
The amino acids sequence in a protein.
What do 3 bases produce
A specific amino acid and these join together to form a protein.
