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Identify the correct relationship between assertions A and R regarding vitamin B12 and pernicious anemia:
Assertion (A): Vitamin B12 plays a crucial role in the prevention of pernicious anemia.
Reason (R): Castle's intrinsic factor facilitates the absorption of vitamin B12.
A is true, and R is false.
A is false, and R is true.
Both A and R are true, and R is a correct explanation of A.
Both A and R are true, but R is not a correct explanation of A.
Answers (1)
Assertion states that vitamin B12 prevents pernicious anemia. This is a true statement. Vitamin B12 is essential for the production of healthy red blood cells, and a deficiency in vitamin B12 can lead to pernicious anemia, a condition characterized by the inability of the body to properly absorb and utilize vitamin B12.
Reason states that Castle's intrinsic factor helps in the absorption of vitamin B12. This is also a true statement. Castle's intrinsic factor is a protein produced by the stomach that binds to vitamin B12 and facilitates its absorption in the small intestine.
Both A and R are true statements. However, Reason is not a correct explanation of Assertion. While Castle's intrinsic factor is indeed involved in the absorption of vitamin B12, there are other factors and processes involved as well.Therefore, option 4 is the correct choice
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