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Bio Ch2.4a Carbs
Bio Ch2.4a Carbohydrate Bio Molecules
Term | Definition |
---|---|
CARBOHYDRATES | Contain elements: C (carbon), H (hydrogen), & O (oxygen) Functions: 1) quick energy 2) energy storage 3) structure |
Monosaccharides | Carbohydrate monomer. (one sugar) Simplest sugars. Examples: glucose & fructose |
Disaccharides | Type of carbohydrate. (two sugars) Made of two monosaccharides joined together Examples: sucrose & maltose |
Polysaccharides | Carbohydrate polymer (many sugars) Made of three or more monosaccharides . Examples: Starch, Glycogen, Cellulose, Chitin |
Starch | Function: stores energy in plants Carbohydrate polysaccharide - found in PLANTS |
Glycogen | Function: stores energy in animals Carbohydrate polysaccharide - found in ANIMALS liver, muscles |
Cellulose function | Function: 1) creates structure in plants 2) as roughage (fiber) stays undigested in humans and keeps material moving in intestines |
Chitin | Function: creates structure in ARTHROPODS (insects) & FUNGI (mushrooms) Carbohydrate polysaccharide - found in exoskeleton & cell walls |
Human Digestion | starch - is easy to digest cellulose is hard to digest - but provides fiber which is good |
Carbohydrate main functions: | 1) quick energy (provided by glucose) 2) energy storage (provided by starch & glycogen) 3) structure (provided by cellulose - cell wall in plants) |
Cellulose - what is it? | Carbohydrate polysaccharide - found in cell walls of PLANTS - herbivores can digest cellulose well - most carnivores cannot digest cellulose |
Herbivore Digestion (cows) | Cows have bacteria in their stomachs which helps digest cellulose-rich (grass) meals |