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Select the correct statement about absorption in the gastrointesitinal tract.

A. Amino acid transport is linked to chloride transport.
B. Carbohydrates diffuse across the villus epithelium and are then actively transported into blood capillaries.
C. Eighty percent of ingested materials have been absorbed by the end of the large intestine.
D. If intact proteins are transported across the villus epithelium, an immune response may be generated.

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Answer:

D. If intact proteins are transported across the villus epithelium, an immune response may be generated

Explanation:

Peptides up to four amino acids are absorbed and chance of absorption of intact protein is very less, it occurs only in rare circumstances. New born baby have ability to absorb of doing this so, but this ability is lost gradually with age. This ability aids in creation of passive immunity in that new born individual who absorbs immunoglobulins via colostral milk. If ability to absorb intact protein is lost by intestines and the individual is not given colostral milk then there are great chances of dying of that individual because it would not gain passive immunization and would develop infection.

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