The Main Classes of Food
Science tuition class in Miracle Learning Centre is fun and enriching. You will learn about the different aspects of Science and how to learn study skills too. If you do not like or understand science, you must definitely attend the science tuition class at Miracle Learning Centre to arouse and reignite your interest. Let us learn about the main classes of food in this science tuition lesson.
Food is any substance which is either eaten or drunk by living organisms. The term food also includes liquid drinks. Food is the main source of energy and of nutrition for animals and is usually of animal or plant origin. There are four basic food energy sources: fats, proteins, carbohydrates, and alcohol.
Food is divided into seven main classes. They are fibre, water and the 5 nutrients namely carbohydrates, fats, protein, vitamins and mineral salts. Fibre is made up of cellulose which cannot be broken down by our body and is needed for keeping the intestines healthy and preventing constipation. Food like brown bread, brown rice, leafy vegetables and fruits all contain fibre. Water makes up about 70% of our body and is needed for breaking down food, dissolving nutrients, transporting nutrients and waste materials.
Carbohydrates on the other hand is an energy supplier where they are made up of carbon, hydrogen and oxygen in the form of sugar in candy, fruits and starches in cereal and bread. Excess carbohydrates are stored in our body as fats. Fats are the most energy supplier where they can produce more than twice as much energy as the same amount of carbohydrates. Proteins are also an energy supplier, body builder and repairer. In addition, minerals are important substances needed in tiny amounts for proper growth of body tissues and in some chemical reactions of the body. Vitamins are needed in small amounts for health and growth and are divided into water-soluble and fat-soluble.
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