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Nutrition
Vocab. Words
| Term | Definition |
|---|---|
| Autotroph | an organism that is able to form nutritional organic substances |
| Heterotroph | an organism deriving its nutritional requirements from complex organic substances. |
| Chemoautotroph | an organism, typically a bacterium, that derives energy inorganic compounds. |
| Photoautotroph | are organisms that carry out photosynthesis. |
| Calories | units use for food |
| Energy | Energy exists in different forms but is neither created nor destroyed; it simply converts to another form |
| Ingestion | the process of taking food, drink, or another substance into the body by swallowing or absorbing it. |
| Digestion | the process of breaking down food by mechanical energy |
| Egestion | is the discharge or expulsion of undigested material (food) from a cell in case of unicellular organisms, |
| cellulose | is the main constituent of plant cell walls and of vegetable fibers such as cotton |
| 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 | A small projection on the surface of a mucous membrane, such as that of the small intestine |
| Constipation | Causes of constipation. Constipation happens when the colon absorbs too much water; this can occur if the muscles in the colon are contracting slowly or poorly, causing the stool to move too slowly and lose more water. |
| Enzyme | catalysts are substances that increase the rate of chemical reactions without being used up. |
| Macromolecules | A large complex molecule, such as nucleic acids, proteins, carbohydrates, and lipids, with relatively large molecular weight |
| 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. |
Created by:
Darylen
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