Beginning of Essay
In the process of transcription a DNA molecule uncoils at a point along its structure where the neccessary information to construct the needed protein is. The weak hydrogen bonds between the DNA bases then break, using the neccessary enzymes, which opens the molec ....

Middle of Essay
.... there are free transfer RNA [tRNA] molecules which hve three protruding bases these sets of three on the tRNA are called anti-codons. Each tRNA molecule attracts different amino acids, of which there are around twenty, and they "stick" to the tRNA and depending on which tRNA molecule it is it wil attract a diferent amino-acid.On the RNA every three bases are called codons these are complementary to the anti-codons of the tRNA. For instance a codon of - GAA - would pair with the anti-codon- CUU -. In this fashion weak hydrogen bonds form between the tRNA and RNA molecules. This occurs at the ribosome. The ribosome is a organelle in the cytopla ....