WAEC Biology 2017 Theory — Question 8

Question 8 of 26 from the West African Examinations Council (WAEC) Biology 2017 Theory paper, with the correct answer and a full explanation.

2(b)(i) List two digestive enzymes produced in the duodenum of humans and name the substrate that each enzyme acts on.

Model answer

The enzymes released into the duodenum include lipase, amylase and trypsin. Lipase acts on fats and oils; Amylase acts on starch; Trypsin acts on protein (peptone).

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