Define (1) nutrition (2) digestion (3) absorbtion (4) assimilation (5) excretion .
Answers
Nutrition is a science that examines the relationship between diet and health. Dietitians are health professionals who specialize in this area of study, and are trained to provide safe, evidence-based dietary advice and interventions.
Digestion, sequence by which food is broken down and chemically converted so that it can be absorbed by the cells of an organism and used to maintain vital bodily functions.
Absorption, in general sense, is the act or process of absorbing or assimilating. ... In chemistry, absorption pertains to the process in which a substance permeates another, as in a liquid permeating, or absorbed by, a solid.
Assimilation is the movement of digested food molecules into the cells of the body where they are used. For example: glucose is used in respiration to provide energy. amino acids are used to build new proteins.
Excretion is a general term referring to the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal. The separation, elaboration, and elimination of certain products arising from cellular functions in multicellular organisms is called secretion.
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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.
Digestion:
- Digestion is the complex process of turning the food you eat into nutrients, which the body uses for energy, growth and cell repair needed to survive.
Absorption:
- Absorption is the process by which the products of digestion are absorbed by the blood to be supplied to the rest of the body.
Assimilation:
- The process whereby individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society.
Excretion:
- The process by which animals rid themselves of waste products and of the nitrogenous by-products of metabolism.