A monosaccharide is a simple sugar whereas a polysaccharide consists of chains of monosaccharides or disaccharides bonded together. Both types of molecules are sugars that can be used by organisms as sources of energy.Know More
Monosaccharides include sugars like the well-known glucose; fructose, a sugar found in fruits; and galactose, found in milk. In animals, the better-known polysaccharide is glycogen, whereas in plants, the more common polymers are starch and cellulose. Glycogen and starch are the forms in which the monosaccharide glucose is stored. Cellulose plays a structural role in the walls of plant cells.
Monosaccharides differ from one another in their configurations or the number of carbon atoms they contain. Glucose contains six carbon atoms while deoxyribose, the sugar in DNA, has five carbon atoms. Fructose, glucose and galactose are isomers of one another, meaning they have the same number and types of atoms, but their forms vary.
With oxygen present, monosaccharides can be broken down to release energy for use in cells. Joining chains of the monosaccharide glucose can yield either starch or glycogen. The liver stores glycogen until it is needed; starch can be found in the roots of plants. Glycogen consists of glucose connected in a branching manner; starch is found as a linear chain of glucose molecules. When energy is needed and glucose is in short supply in the cells, a signal is sent out to mobilize glycogen or starch, depending on the type of organism. These two polysaccharides are broken down to release glucose for cells to use.Learn more about Organic Chemistry
Colloquially, people use the term urethane to refer to a type of varnish, while the term Varathane refers to a brand of varnishes, sealers and similar products. Technically, urethane is not the correct term for the wood-sealing product, even though it is commonly used. Urethane is another name for ethyl carbamate, which is a chemical used in industrial applications. The correct term for the sealant is polyurethane.Full Answer >
The main difference between carbon-12 and carbon-14 is the number of neutrons present in each compound. Carbon-12 has six neutrons, while carbon-14 has eight neutrons, explains About.com. The differing number of neutrons is responsible for numerous differences between the two compounds.Full Answer >
Ethane is a molecule made up of two carbon atoms joined in a single bond. Each carbon atom is bonded to three hydrogen atoms. Ethene is made of two carbon atoms joined in a double bond. Each carbon atom is joined to two hydrogen atoms. Ethyne is made of two carbon atoms joined in a triple bond. Each carbon atom is joined in a single bond to a hydrogen atom.Full Answer >
According to the Indian Institute of Science, Bangalor, oil is the general term that applies to all liquid lubricants, while greases are oils that have been mixed with a thickening agent, which turns them into a semi-solid material. Rather than imparting additional lubrication to the mixture, the thickening agent holds the lubricating oil while reducing its viscosity.Full Answer >