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Explain Macronutrients. |
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Answer» Nutrients are environmental substances used for energy, growth, and bodily functions by organisms. Depending on the nutrient, these substances are needed in small amounts or larger amounts. Those that are needed in large amounts are called macronutrients. There are three macronutrients required by humans: carbohydrates (sugar), lipids (fats), and proteins. Each of these macronutrients provides energy in the form of calories. For example:
This means that if you look at a food label and it lists 10 grams of carbohydrates, 0 grams of protein, and 0 grams of fat, that food would contain 40 calories. macronutrients.The word ‘macro’ means a large amount. Thus the macronutrients are the nutrients that are required in a larger amount. These nutrients are required in large quantities for the growth and development of living organisms. The macronutrients are the major source of energy for the metabolic systems. The obtained energy can be stored in the human body. The macronutrients may include carbohydrates, fats, or protein which are the primary source of energy. Let's consider the macronutrients required by the human body. 1) Carbohydrate: -These are in the form of starch or sugar. -The carbohydrates are obtained from the wheat, rice, millets etc. These break down in the body to generate energy to fuel the daily activities. -The carbohydrates provide energy for 45−650/0 daily needs. -Some carbohydrate is converted into the glycogen which is stored in the liver and muscle. This is converted into the energy source whenever needed. 2) Protein: -Proteins are obtained from fish, meat, eggs, pulses, etc. -Proteins are broken down into amino acids in the body. -These amino acids are utilized as the ‘building block ‘for new proteins which are needed for the growth and repair of tissue, for making hormones and enzymes, and the immune system. -Protein is also considered as the energy source. 3) Fats: -The body obtained the fat from meat, butter, milk, etc. -The fat is an additional source of energy. The daily energy requirement is fulfilled by the consumption of fats and oils. So, here we can say that the macronutrients are the primary source of the energy for the well-functioning, growth, etc. of the body. Note: The body requires the macronutrients in the larger amount. There are six macronutrients that are required by the plants: nitrogen, phosphorus, potassium, magnesium, and sulphur. These macronutrients are absorbed by the roots of the plant and used in the production of energy
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