WAEC - Agricultural Science (2018 - No. 34)
The diagram above illustrates the digestive tract of a farm animal. Digestion of protein starts in the part labelled
I
II
III
IV
Explicació
Protein digestion starts in part I of the digestive tract, which is the stomach of the farm animal. Here, pepsinogen is activated to pepsin by stomach acids, breaking down proteins into smaller peptides and amino acids for absorption in the small intestine