Question on: WAEC Biology - 2009
Pepsin is secreted as an inactive precursor called pepsinogen because
A
pepsin as an enzyme is quickly destroyed by the alkaline food from the mouth
B
. all digestive enzymes pass through a precursor stage
C
pepsin is a proteolytic enzyme and might attack the stomach tissues
D
pepsin is not required in large quantities
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Correct Option: B
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