Iron - MMSC 433 Exam Questions &
Answers (Grade A+)
Dietary iron is digested in the __________ form -
correct answer ✅ferric (Fe3+)
Iron in the stomach -
correct answer ✅HCl & other reducing agents (food, ascorbic acid)
reduce iron to the ferrous (Fe 2+) form
Ferrous form of iron absorption -
correct answer ✅much more rapidly absorbed by the mucosal
cells of the duodenum and upper jejunum than the ferric form
Iron in the mucosal cell -
correct answer ✅Once in the mucosal cell, it is oxidized again back
to the Fe3+ form
and coupled to the protein apotransferrin to form ferritin
Ferritin in circulation -
correct answer ✅bound to transferrin
Answers (Grade A+)
Dietary iron is digested in the __________ form -
correct answer ✅ferric (Fe3+)
Iron in the stomach -
correct answer ✅HCl & other reducing agents (food, ascorbic acid)
reduce iron to the ferrous (Fe 2+) form
Ferrous form of iron absorption -
correct answer ✅much more rapidly absorbed by the mucosal
cells of the duodenum and upper jejunum than the ferric form
Iron in the mucosal cell -
correct answer ✅Once in the mucosal cell, it is oxidized again back
to the Fe3+ form
and coupled to the protein apotransferrin to form ferritin
Ferritin in circulation -
correct answer ✅bound to transferrin
