Genes and protein synthesis

Cards (13)

What is a gene? 
Is the sequence of DNA nucleotides that codes for a polypeptide
what makes proteins different? 
the number and order of amino acids
what determines the order of amino acids in a protein? 
the order of nucleotide bases
what is a triplet? 
3 bases
Role of mRNA? 
carries the genetic code from DNA in nucleus to ribosome in cytoplasm where its used to make a protein during translation.
role of tRNA? 
carries amino acids to ribosomes to make proteins during translation.
structure of tRNA? 
has amino acid binding site at one end
and anticodon on the other end
role of rRNA? 
structural component in ribosome
helps mRNA position correctly in ribosome
helps to catalyse the formation of peptide bonds between the amino acids.
location of rRNA? 
forms the 2 subunits in a ribosome
what is non-overlapping? 
no base can be in more than one codon
what is the genetic code? 
the order of bases in DNA
what is degenerate? 
more combinations of triplets than there are amino acids
what is universal? 
same codon codes for the same amino acid