Hello dear readers! In this post on negarinfo we are going to talk about “difference between monosaccharides and disaccharides”
So stay with us to the end, thanks for choosing our website.
Main Difference – Monosaccharides vs Disaccharides vs Polysaccharides
Carbohydrates are the major components of all living organisms. All the carbohydrates are composed of Carbon (C), Hydrogen (H) and Oxygen (O) atoms in different combinations. Sugars are carbohydrates. The major types of sugars include Monosaccharides and disaccharides. Polysaccharides are complex carbohydrates. The main difference between Monosaccharides Disaccharides and Polysaccharides is that monosaccharides are monomers of sugars and disaccharides are composed of two monomers whereas polysaccharides are composed of a large number of monomers.
MORE POSTS FOR DEAR READERS:
- how old is prince harry and prince william
- on the windows desktop what’s the globe or bottom left menu called?
- economists use the word “money” to refer to
- how many cups in 1.5 quarts of ice cream
- what is the newest country in the southeast asian region?
- the return of swallowed food to the mouth is known as
What is Monosaccharides?
The simplest form of carbohydrates are called monosaccharides which are “soluble, sweet-tasting” sugars. They are the monomer building blocks that join together for more complex carbohydrates. “Mono” refers to one and “saccharide” refers to sugars. They all have the formula of (CH2O)n, where n can be a number between 3 and 7. The molecular formulae for each type of sugar can there be worked out using the general formula (CH2O)n.
Within biological molecules individual units are known as monomers and monomers joined together in chains are known as polymers.
The most common monosaccharide is known as glucose, a six-carbon sugar that has a formula of n=6; C6H12O6. In eukaryotic cells glucose plays an important role in the transport of sugars within the blood and is the main energy source in respiration. Glucose is in a ring form and has 2 isomers called α-glucose and beta-glucose and differ by the position of the hydroxyl (-OH) group . α-glucose is when the hydroxyl group is present below carbon number 1 in the sugar molecule and beta-glucose is where the hydroxyl group is present below the carbon atom.
Examples for Monosaccharides
- Glyceraldehyde (3 carbon atoms)
- Erythrose (4 carbon atoms)
- Pentose (5 carbon atoms)
- Glucose (6 carbon atoms)
What is a Disaccharide?
Disaccharides are sugar molecules composed of two monosaccharides. Therefore every disaccharide is composed of two chemical rings. The bond between two monosaccharides is called a glycosidic bond. Disaccharides are also simple sugars. Disaccharides are classified into two groups according to their reducing strength.
- Reducing sugars – can act as a reducing agent
- Non-reducing sugars – cannot act as a reducing agent
Therefore, some disaccharides are reducing sugars and some are not. All disaccharides are water soluble and colorless when dissolved in water. Some disaccharides are sweet tasting but some are not.
Examples for Disaccharides and their Properties
|Sucrose||Glucose and Fructose||Non-reducing||Sweet|
|Lactose||Glucose and Galactose||Reducing||Sweet|
What is the difference between monosaccharides and disaccharides? What are some examples of disaccharides and of monosaccharides that form them?
Monosaccharides are simple molecules of carbohydrates that cannot be broken into other carbohydrates.
Glucose and fructose are examples of monosaccharides.
Disaccharides are carbohydrates made of two monosaccharides and with
the loss of one molecule of water dehydration.
The chemical bond between two monosaccharides is known as a glycosidic bond.
Sucrose table sugar is a disaccharide made by the union of one molecule of glucose with one molecule of fructose.
Maltose is a disaccharide made by two glucose molecules.
Lactose milk sugar is another disaccharide and it is created by the
union of one molecule of galactose with one molecule of glucose.