Your friend, Lacy, is suffering from a deficiency of iron. Explain how

this affects the transport of oxygen by the red blood cells.

(4 marks)

(d)

Suggest ONE sign or symptom which may result from a deficiency of iron.

she'll have decreased oxygen throughout her body, resulting in weakness and shortness of breath - symptoms of iron deficiency include paleness, fainting, fatigue, and weakness.

Explanation:

iron molecules bind to your hemoglobin (blood proteins) and provide a space bonding site for oxygen molecules. an iron deficiency would impair her blood's ability to transport oxygen to her organs, which would leave her weak, short of breath, and prone to passing out.