Which is a disaccharide? glucose fructose sucrose cellulose

Sucrose is a disaccharide. It is made up of two monosaccharides.

Further Explanation:

Carbohydrates are one of the class of biomolecules that perform the functions like energy storage, cell identification, raw material for the synthesis of other biomolecules (like nucleic acid), and structural support to the cell.

Monosaccharides are the monomer units of large carbohydrate molecules. Glucose, galactose, fructose, and ribose are examples of monosaccharide. The monosaccharide link to one another by ether bond called glycosidic bond and form polysaccharide (carbohydrate made up of two to more monosaccharides). The glycosidic linkage is a type of covalent bond formed by the condensation reaction. In this reaction, a molecule of water is eliminated. Disaccharide is a polysaccharide made up of two monosaccharides. The disaccharides can be homodisaccharide or heterodisaccharide.  

Homodisaccaharide is composed of two same monosaccharide units. For example, maltose is a disaccharide made up of two molecules of glucose. Heterodisaccharides, on the other hand, is composed of two different monosaccharides. For example, sucrose is made up of one fructose and one glucose unit. The glucose and fructose in a sucrose molecule are -D-glucose and -D-fructose, respectively. The glycosidic linkage is between the carbon 1 (C1) of the α-D-glucose unit and carbon 2 (C2) of the -D-fructose unit. The glycosidic bond is -1,2-glycosidic bond. Sucrose s naturally produced by the plants. It provides energy to the body that is used to perform various physical and mental activities. Cellulose is an example of polysaccharide made up of multiple glucose units.

Learn more:

1.Learn more about cellular respiration

2.Learn more about protein by cell organelle

3.Learn more about cell cycle

Answer Details:

Grade: High School

Subject: Biology

Chapter: Biomolecules

Keywords:

Biomolecule, carbohydrate, monomer, monosaccharide, disaccharide, homodisaccahride, heterodisaccahride, polysaccharide, sucrose, glucose, fructose, glycosidic bond.

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.