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Nutrition Vocab

Autotroph an organism that is able to form nutritional organic substances from simple inorganic substances
Heterotroph an organism that is able to form nutritional organic substances from simple inorganic substances
Chemoautotroph an organism that derives energy from the oxidation of inorganic compounds
Photoautotroph any organism that derives its energy for food synthesis from light
Calories a unit of energy
Energy the strength and vitality required for sustained physical or mental activity
Ingestion the act of taking in food
Digestion the act of breaking down food
Egestion the act of letting out the waste food
Roughage coarse food high in fiber but low in nutrients
Cellulose a complex carbohydrate that forms the main part of the cell wall in most plants and is important in the making of numerous products
Body Mass Index is a person's weight in kilograms (kg) divided by his or her height in meters squared
Absorption the act of taking up or in by specific chemical or molecular action; especially the passage of liquids or other substances through a surface of the body into body fluids and tissues
Diffusion the state or process of being widely spread
Villi any of the numerous finger-like projections of the mucous membrane lining the small intestine of many vertebrates
Constipation Difficult, incomplete, or infrequent evacuation of dry hardened feces from the bowels
Enzyme Any of numerous compounds that are produced by living organisms and function as biochemical catalysts
Macromolecules A very large molecule, such as a polymer or protein, consisting of many smaller structural units linked together
Bulimia An eating disorder characterized by episodic binge eating followed by feelings of shame, depression, and self-condemnation
Anorexia Loss of appetite
Created by: ItzxVanna