Which of the following enzymes is not useful in the digestion of proteins 

Lipase is used in lipid metabolism.

 Lipid   $\stackrel{Lipase }{\to }$    Fatty acid+ Glycerol

..Protein digestion occurs in the stomach and duodenum in which 3 main enzymes: Pepsin, trypsin and chymotrypsin.

• pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.
• Hence, Lipase enzymes are not useful in the digestion of proteins.
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