_____ is required for absorption of vitamin B₁₂.

Question

Quizplus · Accepted Answer

Intrinsic factor is a glycoprotein that is secreted by the stomach, and it binds to vitamin B₁₂ and facilitates its absorption in the intestine. Without intrinsic factor, absorption of vitamin B₁₂ would be significantly impaired, leading to pernicious anemia. Bile is involved in the digestion of lipids, chyme is the mixture of gastric juices and partially digested food that enters the duodenum, and hydrochloric acid is needed to denature proteins and activate pepsinogen in the stomach. While these substances are important for digestion, they are not specifically required for absorption of vitamin B₁₂.

_____ Is Required for Absorption of Vitamin B₁₂