How are protein formed within an organism?

Proteins are formed through transcription, translation, and protein synthesis. In transcription, where a strand of DNA is read by mRNA polymerase, which copies the DNA codes (adenine, thymine, guanine, and cytosine) by making their opposites (ex. DNA strand has thymine, so mRNA strand has adenine, but thymine is NOT on mRNA but is instead called uracil). Next in translation, the mRNA leaves the cell's nucleus. The codons on the strand (set of 3 nucleobases, ex. UUU or AAA, etc.) call for an anticodon (a set of codons carrying a protein) to attach to it. For instance if a codon is read UUU, then the anticodon carried the AAA protein. Another example, if the codons read AUG, the anticodon reads UAC. The anticodons bring in proteins until the mRNA has no more codons to copy. And thats how proteins are made in organisms.