What does food contain?
Which are the different nutrients?
How can we test for the presence of nutrients in a food item?
Which foods contain which nutrients?
What is the function of each nutrient?
What is a balanced diet?
What are the diseases caused by deficiencies of various nutrients?
Answers
Answer:
Hope it will help you
Explanation:
‘Macro’ means large; as their name suggests these are nutrients which people need to eat regularly and in a fairly large amount. They include carbohydrates, fats, proteins, fibre and water. These substances are needed for the supply of energy and growth, for metabolism and other body functions.
Metabolism means the process involved in the generation of energy and all the ‘building blocks’ required to maintain the body and its functions.
Macronutrients provide a lot of calories but the amount of calories provided varies, depending on the food source. For example, each gram of carbohydrate or protein provides four calories, while fat provides nine calories for each gram.
2.1.2 Micronutrients
As their name indicates (‘micro’ means small) micronutrients are substances which people need in their diet in only small amounts. These include minerals and vitamins.
Although most foods are mixtures of nutrients, many of them contain a lot of one nutrient and a little of the other nutrients. Foods are often grouped according to the nutrient that they contain in abundance (see Box 2.1).
Box 2.1 Nutrient types and their names
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