Which Water-Soluble Vitamin Must First Be Bound to the Intrinsic

question 73

Multiple Choice

Which water-soluble vitamin must first be bound to the intrinsic factor secreted by the gastric mucosa before it can be absorbed by the intestinal epithelium?

• A) vitamin B₂ (riboflavin)
• B) vitamin C (ascorbic acid)
• C) vitamin B₁₂ (cobalamin)
• D) vitamin B₅ (pantothenic acid)
• E) vitamin B₆ (pyridoxine)

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