Here's how it works:

* DNA contains genes: Each gene within DNA is a set of instructions for making a specific protein.

* Transcription: The DNA sequence of a gene is copied into a messenger RNA (mRNA) molecule.

* Translation: The mRNA molecule travels to a ribosome, where the genetic code is translated into a chain of amino acids.

* Protein Folding: The chain of amino acids folds into a specific three-dimensional shape, creating a functional protein.

Proteins are the workhorses of cells. They perform a wide variety of tasks, including:

* Building and repairing tissues

* Catalysing (speeding up) chemical reactions

* Transporting molecules

* Signalling between cells

* Defending against pathogens

In essence, the instructions in DNA determine the type and amount of proteins a cell makes, which ultimately dictates the cell's function and characteristics.