Which of the following statements regarding protein digestion and absorption is TRUE?
A. Pepsin digests protein mainly in the small intestine.
B. After absorption, the products of protein digestion are carried by blood directly to the liver.
C. Only the exocrine pancreas produces enzymes that can digest proteins.
D. Free amino acids are the only product of protein digestion that can be absorbed from the lumen into intestinal epithelial cells.
E. The enzymes that digest protein are secreted in active form.
Answer: B
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