Pepsinogen
A. is secreted by parietal cells.
B. is activated by salivary amylase in swallowed food.
C. is packaged in zymogen granules.
D. operates optimally at a pH of 5 or more.
E. helps to form peptide bonds.
C
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Answer the following statement true (T) or false (F)
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Answer the following statement true (T) or false (F)