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Questions and Answers
What is the role of ascorbic acid in the absorption of non-heme iron?
What is the role of ascorbic acid in the absorption of non-heme iron?
- It reduces Fe+3 to Fe+2 by apical enterocyte reductase enzyme (correct)
- It binds to the iron to enhance its absorption
- It inhibits the absorption of iron
- It releases the iron from food binding sites
Which form of iron must enterocytes absorb?
Which form of iron must enterocytes absorb?
- Iron is not absorbed by enterocytes
- Both ferric and ferrous forms
- Ferric (Fe+3)
- Ferrous (Fe+2) (correct)
What substance found in tea and coffee can inhibit iron absorption from non-heme and uncooked heme sources?
What substance found in tea and coffee can inhibit iron absorption from non-heme and uncooked heme sources?
- Innate (correct)
- Ferric form of iron
- Ascorbic acid
- Enterocytes
