Which one of the following is not a digestive enzyme in the human system? 

(a) Trypsin (b) Gastrin (c) Ptyalin (d) Pepsin

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1 Answers

(b) Gastrin is a hormone, which stimulates secretion of digestive enzyme in stomach. Trypsin, Pepsin and Ptyline are the digestive enzymes of human system.

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