What is Metabolism?
Metabolism is a complex process of transformation of chemical elements in the body, ensuring its growth, development, activities and life in general. In the living organism is constantly consumes energy, not only during physical and mental work, and even when the rest (sleep).
Metabolism consists of two opposing, simultaneous processes. First – anabolism, or assimilation, combines all the reactions associated with the synthesis of essential substances, their uptake and use for growth, development and functioning of the body. Second – catabolism or dissimilation, includes reactions associated with the collapse of the substances, the oxidation and elimination from the body’s waste products.
Metabolism is a complex biochemical processes and energy to ensure the use of nutrients for the needs of the body and its needs in the plastic materials and energy. Proteins, fats, carbohydrates are broken down in the digestive tract into simpler low molecular weight substances. Proceeding in the blood and tissue, they undergo further transformations – aerobic oxidation. In the course of these transformations is the use of oxidation products for the synthesis of amino acids and other essential metabolites. Thus, the aerobic oxidation combines elements of disintegration and synthesis and acts as a link in the metabolism of proteins, fats, carbohydrates and other substances.
More on What is Metabolism
Although metabolism occurs continuously, the apparent constancy of the body was misleading not only inexperienced in the science of people, but some scientists. To believe that the body has two kinds of substances, some of which are for the construction of the body motionless, static, while others are used as an energy source, quickly processed.
The introduction of the biological tracer studies possible in animal experiments to establish that in all tissues and cell metabolism is continuous: there is no difference between “building” and “energy” molecules do not exist. In the body of all the molecules are equally involved in metabolism. The average person every 80 days, changing half of the tissue proteins, enzymes of the liver from the last 2 – 4 hours, and some are even a few tens of minutes.
What is metabolism is what provides inherent living organism as a system of dynamic equilibrium in which the mutually balanced synthesis and destruction, birth and death. At the core of metabolic reactions are physical and chemical interactions between atoms and molecules, which obey the same for living and nonliving matter laws. Of course, this does not mean reduced all the way to physical and chemical processes. Living organisms has its own peculiarities.
Since metabolism is closely related to the exchange of energy in the body. Living organisms can exist only if the continuous supply of external energy. And because they constantly need energy to perform various kinds of work – mechanical (movement of the body. Cardiac activity, etc.), electrical (creating a potential difference in cells and tissues), chemical (synthesis of compounds), etc.
The primary source of energy for humans, as well as for all life on Earth is solar radiation. The food produced by the same energy of the sun. The initial link of the food chain – plants, accumulating during photosynthesis solar energy. The green pigment of plants – chlorophyll under the influence of light quanta from the water and carbon dioxide are synthesized organic substances – the basis of food.
The composition of foods is complex and diverse. It is most major nutrients, which include proteins, fats, carbohydrates. What is Metabolism is found in food and mineral elements – calcium, phosphorus, sodium, etc., they are called macrocells, in contrast to trace elements contained in it in very small amounts (copper, cobalt, iodine, zinc, manganese, selenium, etc.). There are foods and flavors that give it special properties.
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