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Nutrition The process of taking in food and using it for growth.
Nutrition:
The process of taking in food and using it for growth, metabolism, and repair. Nutritional stages are ingestion, digestion, absorption, transport, assimilation, and excretion.
Human nutrition
Human nutrition deals with the provision of essential nutrients from food that are essential to care human life and good health. In humans, poor nutrition can cause deficiency-related diseases such as blindness, anaemia, scurvy, preterm birth, stillbirth and cretinism, or nutrient excess health-threatening conditions such as obesity and metabolic syndrome. Undernutrition can lead to worsening in acute cases, and stunting of marasmus in chronic cases of malnutrition.
A nutritionist has a strong nutrition background. He wrote books about nutrition and create some nutrition calculator that calculated your nutrition values. He also offers courses and teaches in institutions. He also prepares nutrition charts so you may easily get idea about nutrition effects about food you are going to use for your daily life. Nutrition plan are made for the people really need to get better life and remains to be active in any aspect of life. In this modern ear there are lot of nutrition doctors, nutrition guide, nutrition instructor and nutrition professional expert who guide you about nutrition effects in your daily intake food.
Animal nutrition
Animal nutrition focuses on the dietary nutrients needs of animals, often in comparison to other organisms like plants. Carnivore and herbivore diets are contrasting, with basic nitrogen and carbon proportions vary for their particular foods. Many herbivores rely on bacterial fermentation to create digestible nutrients from indigestible plant cellulose, while obligate carnivores must eat animal meats to obtain certain vitamins or nutrients their bodies cannot otherwise synthesize. Animals generally have a higher requirement of energy in comparison to plants.
Plant nutrition
Plant nutrition is the study of the chemical elements that are necessary for plant growth. There are numerous principles that apply to plant nutrition. Some elements are directly involved in plant metabolism. However, this principle does not account for the so-called beneficial elements, whose presence, while not required, has clear positive effects on plant growth.
There are 16 essential plant soil nutrients, besides the three major elemental nutrients carbon and oxygen that are obtained by photosynthetic plants from carbon dioxide in the air, and hydrogen, which is obtained from water.
Plants uptake essential elements from the soil through their roots and from the air (consisting of mainly nitrogen and oxygen) through their leaves. Green plants obtain their carbohydrate supply from the carbon dioxide in the air by the process of photosynthesis. Carbon and oxygen are absorbed from the air, while other nutrients are absorbed from the soil. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps. These hydrogen ions displace cations attached to negatively charged soil particles so that the cations are available for uptake by the root. In the leaves, stomata open to take in carbon dioxide and expel oxygen. The carbon dioxide molecules are used as the carbon source in photosynthesis.
Plant nutrition is a difficult subject to understand completely, partially because of the variation between different plants and even between different species or individuals of a given clone. Elements present at low levels may cause deficiency symptoms, and toxicity is possible at levels that are too high. Furthermore, deficiency of one element may present as symptoms of toxicity from another element and vice versa.
Last updated on Nov 4, 2021
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Learn nutrition for life
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Nov 4, 2021