Explain what is meant by the term intrinsic factor.
A) Intrinsic factor is a protein that is necessary for intestinal absorption of vitamin B12; lack of intrinsic factor leads to pernicious anemia.
B) Intrinsic factor is an enzyme that is necessary for metabolism of vitamin B12; lack of intrinsic factor leads to pernicious anemia.
C) Intrinsic factor is a protein that is necessary for intestinal absorption of vitamin B12; lack of intrinsic factor leads to megaloblastic anemia.
D) None of these are correct.
Correct Answer:
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