Polysaccharides are carbohydrate molecules formed from long chains of monosaccharides. All polysaccharides contain glucose. Humans, animals and plants synthesize polysaccharides and store them for food or structural support, or metabolize them for energy. Some common examples include plant starch, glycogen and cellulose.Continue Reading
Polysaccharides may range from linear to highly complex in structure. There are two types of plant starches: amylose and amylopectin. Amylopectin is branched while amylose is not.
Amylose is a helical chain made of glucose monomers, bonded together by glycosidic linkages. Amylose can be found in plants such as potatoes and used as a primary energy source for humans. Amylopectin can also be used as a primary energy source for humans.
Glycogen is a storage polysaccharide found in animals. It is similar to amylopectin but is more highly branched, and its molecules are tighter. Glycogen can be used by humans as an energy source.
Cellulose has a beta acetal linkage which separates it from starch. It is a major component in plant cell walls. Humans lack the appropriate enzymes to break down beta acetal linkages and therefore cannot digest cellulose. In its undigested form, it is used in aiding the smooth working of the human intestinal tract. Cellulose can also be found in wood, paper, cotton and linen.Learn more about Chemistry
Some types of carbohydrate molecules include monosaccharides, disaccharides and polysaccharides. These molecules are often called sugars. Other carbohydrate molecules are oligosaccharides and nucleotides. Carbohydrates are regarded as the most plentiful compounds available on earth.Full Answer >
Electronegativity in atoms causally relates to polarity in molecules, as different electronegativities in different components of an asymmetrical molecule cause that molecule to be polar. However, electronegativity differences that are too great lead not to polar molecules, but to ionic bonds. Electronegativity differences also do not lead to polar molecules when they are fully symmetrical because the charges are balanced.Full Answer >
Salt absorbs water moisture because it is an ionic compound with strong attractive forces for the highly polar water molecules. This property means that salt is hygroscopic, meaning that it absorbs both liquid water and water vapor in the air. This process is actually the same one that occurs when salt is dissolved in water, except that in this case the salt predominates, so the interacting particles maintain solidity.Full Answer >
According to Elmhurst College, rubber can expand because the molecules inside it are coiled up like a spring. Those molecules can then be expanded or compressed, giving rubber its characteristic elasticity.Full Answer >