explain the process of creating a protein?

Coding in DNA is used to produce the three types of RNA, messenger, ribosomal and transfer in a process called transcription.  The messenger RNA contains the code for the synthesis of a protein.  The ribosomal RNA is  used to help assemble functional ribosomes.  Transfer RNA is used to bring the appropriate amino acid to the ribosomes for protein synthesis.  Messenger RNA codons (groups of three nucleotides that code for a particular amino acid) are "read" by the ribosomes allowing the tRNA to attached to the ribosome and transfer its amino acid to the chain of amino acids.  When the ribosomes reach the stop codon, it disassembles and the protein is released.

It occurs in two stages: Transcription and Translation.

In transcription, mRNA is made from the gene on the DNA. RNA Polymerase binds to the promoter of the gene and a complimentary mRNA strand is built.

The mRNA is then processed with introns being removed, a polyA tail added and a methylated guanine cap. mRNA then leaves the nucleus through the pores and goes to the ribosome for translation.

The ribosome scans the mRNA for the start codon (AUG) and then assembles on the mRNA. tRNAs bring the appropriate amino acids to the ribosome where the anticodon of the tRNA matches up with the codon of mRNA and peptidyl transferase catalyzes peptide bonds between the amino acids.

When a stop codon is reached, the polypeptide is released. It then goes to the rough ER for modification where some amino acids are removed. The modified polypeptide then travels to the Golgi body where there is more modification, often multiple polypeptides are put together, to make the final protein. If the protein is destined to be shipped out of the cell, the protein is sent out of the Golgi through a secretory vesicle with then goes to the cell membrane to be released.