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nutrition vocab
| Term | Definition |
|---|---|
| autotroph | organism that obtains its energy from abiotic sources such as sunlight or inorganic chemicals |
| heterotrophy | organism that obtains it energy and nutrients by consuming other organisms |
| chemoautotroph | an organism that depend on inorganic chemicals for it energy |
| photoautotroph | any organism that derives it energy for food synthesis from light |
| calorie | measure of energy released from digesting food |
| energy | the capacity or power to do work such as capacity to move an object |
| ingestion | the process of taking food and drink or another substance into the body by swallowing or absorbing it |
| digestion | process by which large ,complex molecules are broken down into smaller molecules that can be used by cells |
| egestion | the process of removing undigested waste material the body |
| roughage | indigestible material in vegetable foodstuff 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. |
| body mass index | a weight to height ratio |
| absorption | process by which nutrients move out of one system and into another |
| diffusion | movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration |
| villi | increasing it surface area for the absorption |
| constipation | a condition in which there is difficulty in emptying the bowels, usually associated with hardened |
| enzyme | protein that catalyzes chemical reactions for organisms |
| marcomolecules | 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 followed by inappropriate methods of weight control, |
| anorexia | eating disorder characterized by markedly reduced appetite or total aversion to food |