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Nutrition – The biochemical and physiological process by which an organism consumes food to sustain its existence is nutrition: ingestion, absorption, assimilation, biosynthesis, catabolism, and excretion. Nutritional science is the study of the physiological functions of nutrition.
Nutrients are substances an organism needs to survive, develop, and reproduce. Carbohydrates, dietary fiber, lipids, proteins, minerals, vitamins, and water are the seven essential nutrients for animals. Nutrients are macronutrients or micronutrients, with vitamins and minerals required in milligram or microgram amounts. Nutritionists study how foods influence the human body using molecular biology, biochemistry, and genetics concepts.
Human nutrition is concerned with providing critical nutrients from the food required to sustain human life and health. Poor nutrition in humans can result in deficiency-related diseases such as blindness, anemia, scurvy, preterm birth, stillbirth, cretinism, and nutrient excess health-threatening conditions such as obesity and significant chronic systemic disorders such as cardiovascular disease, diabetes, and osteoporosis.
Autotrophy is the primary method through which organisms get carbon. Heterotrophy is the consumption of existing organic carbon and the self-production of organic food. There are four basic nutritional classes for organisms, combined with the source of energy, either light phototrophy or chemical chemotroph.
The study of the chemical ingredients required for plant development is known as plant nutrition. Numerous concepts govern plant nutrition. Some elements have a direct role in plant metabolism. This approach, however, does not account for so-called helpful features, the existence of which, while not needed, has favorable impacts on plant development.
According to Liebig’s minimum rule, a nutrient is considered an essential plant nutrient if the plant cannot complete its life cycle without it. Aside from the three primary elemental nutrients, carbon and oxygen, which photosynthetic plants receive from carbon dioxide in the air, and hydrogen, derived from water, there are 16 vital plant soil nutrients.
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