Home ยป Which of the following is necessary to make haemoglobin present in the red blood cells? Components of Food MCQs Which of the following is necessary to make haemoglobin present in the red blood cells? September 28, 2022 16 Views Q. Which of the following is necessary to make haemoglobin present in the red blood cells? IodineRed phosphorusIronSodium Answer: Iron