What must be combined with vitamin B₁₂ for it to be absorbed in the small intestine?
A)intrinsic factor
B)vitamin D
C)iron
D)calcium
E)bile salts

Question

What must be combined with vitamin B₁₂ for it to be absorbed in the small intestine?​
A)​intrinsic factor
B)vitamin D
C)iron
D)calcium
E)​bile salts

Quizplus · Accepted Answer

Vitamin B₁₂ must be combined with intrinsic factor for it to be absorbed in the small intestine. Intrinsic factor is produced by the cells of the stomach lining and is necessary for the absorption of vitamin B₁₂. Without intrinsic factor, vitamin B₁₂ cannot be absorbed properly and can lead to deficiencies. Vitamin D, iron, calcium, and bile salts do not play a role in the absorption of vitamin B₁₂.

What Must Be Combined with Vitamin B₁₂ for It to Be