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Question
what is the function of intrinsic factor in vitamin b12 absorption?
a.it catalyzes release of the vitamin from its protein-bound form
b.it attaches to the vitamin, thereby allowing absorption from the small intestine
c.it acts as a storage protein for the vitamin within the intestinal epithelial cells
d.it acts as a cofactor for mucosal enzymes involved in absorption of the vitamin
Answer
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