Which of the following is not associated with vitamin B12?

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Enhance your knowledge with the Ciulla Clinical Chemistry Test. Study with interactive quizzes, featuring flashcards and multiple-choice questions. Each question offers hints and explanations for better understanding. Prepare effectively and excel in your exam!

Multiple Choice

Which of the following is not associated with vitamin B12?

Explanation:
Vitamin B12 is a water-soluble vitamin that relies on intrinsic factor, produced by the stomach, for its absorption in the terminal ileum. The intrinsic factor–B12 complex binds to receptors in the ileum, allowing B12 to enter the bloodstream. The Schilling test historically assessed how well B12 is absorbed and helped differentiate causes of deficiency, such as malabsorption versus lack of intrinsic factor. Pernicious anemia is an autoimmune condition where intrinsic factor production is impaired, leading to B12 deficiency. The property not associated with vitamin B12 is being insoluble in water, because B12 is water-soluble.

Vitamin B12 is a water-soluble vitamin that relies on intrinsic factor, produced by the stomach, for its absorption in the terminal ileum. The intrinsic factor–B12 complex binds to receptors in the ileum, allowing B12 to enter the bloodstream. The Schilling test historically assessed how well B12 is absorbed and helped differentiate causes of deficiency, such as malabsorption versus lack of intrinsic factor. Pernicious anemia is an autoimmune condition where intrinsic factor production is impaired, leading to B12 deficiency. The property not associated with vitamin B12 is being insoluble in water, because B12 is water-soluble.

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