<prompt> Iron absorption is increased by which of the following?PhytatesTannatesPlant foodsAscorbic acid  <response>: - Site of iron absorption - duodenum and upper jejunum proximal small intestine. - Iron absorption is increased by Acids Ascorbic acid Vitamin C, citric acid Amino acids containing SH-group Sugars in the diet - Phytates, Tannates found in tea, tetracyclines Plant foods non-heme iron decreases iron absorption 