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nutrition vocabulary

TermDefinition
Autotrophs is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.
Heterotrophs an organism deriving its nutritional requirements from complex organic substances.
Chemoautotrophs organisms that obtain energy by the oxidation of electron donors in their environments.
Photoautotrophs any organism that derives its energy for food synthesis from light and is capable of using carbon dioxide as its principal source of carbon.
calories either of two units of heat energy.
energy he property that must be transferred to an object in order to perform work on, or to heat, the object.
ingestion the process of taking food, drink, or another substance into the body by swallowing or absorbing it.
digestion the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma.
egestion the discharge of undigested food in the Digestive tract for multicellular organisms and is done on the surface of the cell in unicellular organisms.
Roughage fibrous indigestible material in vegetable foodstuffs that aids the passage of food and waste products through the gut.
Cellulose an insoluble substance that is the main constituent of plant cell walls and of vegetable fibers such as cotton. It is a polysaccharide consisting of chains of glucose monomers.
body mass index a weight-to-height ratio, calculated by dividing one's weight in kilograms by the square of one's height in meters and used as an indicator of obesity and underweight.
Absorption the process or action by which one thing absorbs or is absorbed by another.
Diffusion the intermingling of substances by the natural movement of their particles.
villi any of numerous minute elongated projections set closely together on a surface, typically increasing its surface area for the absorption of substances, in particular.
constipation bowel movements that are infrequent or hard to pass
enzyme macromolecular biological catalysts.
marcomolecules a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.
Bulimia A serious eating disorder marked by binging, followed by methods to avoid weight gain.
Anorexia An eating disorder causing people to obsess about weight and what they eat.
Created by: nahomi2775