* DNA as a blueprint: DNA contains the genetic instructions for building and maintaining an organism. These instructions are encoded in the sequence of nucleotides within the DNA molecule.
* Transcription: The first step in protein synthesis is transcription. This process occurs in the nucleus, where the DNA sequence of a gene is copied into a messenger RNA (mRNA) molecule.
* mRNA travels to cytoplasm: The mRNA molecule then leaves the nucleus and travels to the cytoplasm, where protein synthesis takes place.
* Translation: In the cytoplasm, ribosomes bind to the mRNA and read its sequence. Using this information, ribosomes recruit and link together amino acids, forming a polypeptide chain.
* Protein folding: The polypeptide chain then folds into a specific three-dimensional structure, forming a functional protein.
So, the DNA in the nucleus provides the instructions for building proteins, which are essential for all cellular functions.
