Intrinsic factor is a substance needed for adequate absorption of vitamin _____.
A) C
B) B12
C) A
D) D
E) H

Question

Quizplus · Accepted Answer

Intrinsic factor is a glycoprotein produced by the parietal cells of the stomach lining. It is essential for the absorption of vitamin B12 (cobalamin) in the small intestine. Without intrinsic factor, vitamin B12 cannot be absorbed effectively, leading to vitamin B12 deficiency and pernicious anemia.

Intrinsic Factor Is a Substance Needed for Adequate Absorption of Vitamin