What is $trypsin$? What is its function?

(N/A) Step $1$: $Trypsin$ is a proteolytic enzyme secreted by the pancreas in an inactive form called $trypsinogen$.
Step $2$: In the small intestine, it is activated and functions to break down complex proteins into smaller peptides and amino acids.
Step $3$: Therefore, its primary function is the digestion of proteins.