Which of the following is a trisaccharide?
Which of the following is a trisaccharide?
- Maltose
- Lactose
- Raffinose
- Stachyose
The Correct Option is C
Solution and Explanation
Among the given options, the trisaccharide is (C) Raffinose.
Maltose (A) is a disaccharide composed of two glucose units linked together by an α(1→4) glycosidic bond. Maltose is commonly found in malt and is a product of starch digestion.
Lactose (B) is also a disaccharide, consisting of a glucose unit linked to a galactose unit through a β(1→4) glycosidic bond. Lactose is the sugar found in milk and is often referred to as milk sugar.
Raffinose (C) is a trisaccharide made up of one glucose molecule, one fructose molecule, and one galactose molecule. This sugar is commonly found in beans, cabbage, brussels sprouts, broccoli, and other vegetables, and it is known for its inability to be digested by humans, often causing gas.
Stachyose (D) is a tetrasaccharide composed of two galactose units, one glucose unit, and one fructose unit. Like raffinose, stachyose is also found in various vegetables and beans and is not easily digestible by humans.
Therefore, the trisaccharide among the given options is Raffinose (C).
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Concepts Used:
Biomolecules
Biomolecules are the most essential organic molecules, which are involved in the maintenance and metabolic processes of living organisms. These non-living molecules are the actual foot-soldiers of the battle of sustenance of life.
There are four major classes of Biomolecules – Carbohydrates, Proteins, Nucleic acids and Lipids.
- Carbohydrates are chemically defined as polyhydroxy aldehydes or ketones or compounds which produce them on hydrolysis.
- Proteins are another class of indispensable biomolecules, which make up around 50per cent of the cellular dry weight. Proteins are polymers of amino acids arranged in the form of polypeptide chains. The structure of proteins is classified as primary, secondary, tertiary and quaternary in some cases.
- Nucleic acids refer to the genetic material found in the cell that carries all the hereditary information from parents to progeny. There are two types of nucleic acids namely, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The main function of nucleic acid is the transfer of genetic information and synthesis of proteins by processes known as translation and transcription.
- Lipids are organic substances that are insoluble in water, soluble in organic solvents, are related to fatty acids and are utilized by the living cell.