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SingaporeNutrition & Food ScienceQuick questions
Nutrients and Their Functions
Quick questions on Minerals and water - O-Level Food and Nutrition
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is iron?Show answer
Function: iron is needed to make haemoglobin, the red pigment in red blood cells that carries oxygen from the lungs to the rest of the body.
What is sodium?Show answer
Sodium, from salt, helps control the body's water balance and is needed for nerve and muscle function. The problem in most diets is too much, not too little: a high salt intake raises blood pressure, increasing the risk of heart disease and stroke. Cutting back on salty foods and added salt is a common health recommendation.
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