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nutrition

TermDefinition
Autotroph organism that gets its energy from nonliving sources, such as sunlight or inorganic chemicals.
Heterotroph Organism that gets its energy and nutrients by consuming other organisms
Chemoautotroph an organism, typically a bacterium, that derives energy from the oxidation of inorganic compounds.
photoautotroph organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration.
Calories a measure of energy in food, specifically the measure of heat needed to raise a kilogram or a gram of water by one degree Celsius
Energy The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force
Ingestion Taking in food from the environment
Digestion Breaking down food
Egestion Elimination of sold waste
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 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
Absorpriom Chemistry The process by which one substance, such as a solid or liquid, takes up another substance, such as a liquid or gas, through minute pores or spaces between its molecules.
Diffusion Movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration.
Villi Any of numerous minute elongated projections set closely together on a surface, typically increasing its surface for the absorption of substances in particular.
Constipatioin a condition in which there is difficulty in emptying the bowels, usually associated with hardened feces.
Macromolecules a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.
Bulimia An eating disorder characterized by episodes of secretive excessive eating (binge-eating) followed by inappropriate methods of weight control, such as self-induced vomiting (purging), abuse of laxatives and diuretics, or excessive exercise.
Anorexia : An eating disorder characterized by markedly reduced appetite or total aversion to food .It is a condition that goes well beyond out-of-control dieting. The person with anorexia, most often a girl or young woman, initially begins dieting to lose weight.
Enzyme Protein that catalyzes chemical reactions for organisms
Created by: Lavay