|the COOH partgroup of an amino acid|
|unique substances that cannot be broken down into simpler substancesby ordinary chemical bonds|
glycogen gly·co·gen (glī'kə-jən)
A polysaccharide that is the main form of carbohydrate storage in animals and occurs mainly in liver and muscle tissue; it is readily converted to glucose. Also called animal starch.
|glycogen (glī'kə-jən) Pronunciation Key
A polysaccharide stored in animal liver and muscle cells that is easily converted to glucose to meet metabolic energy requirements. Most of the carbohydrate energy stored in animal cells is in the form of glycogen.