Carbohydrate Monosaccharide
It is made up of a mixture of amylose (15–20%) and amylopectin (80–85%). Amylose consists of a linear chain of several hundred glucose molecules and Amylopectin is a branched molecule made of several thousand glucose units (every chain of 24–30 glucose units is one unit of Amylopectin). Starches are insoluble in water.  The basic unit of a carbohydrate is a saccharide unit (sugar). Proteins are made of amino acids. Lipids are made up of mainly long chains of hydrocarbons, and nucleic acids are made up of nucleotides (a nucleotide is made of a phosphate, nitrogenous base, a sugar, and either adenine, uracil, guanine, or cytosine.  Monosaccharide sugar molecules are also referred to as simple sugars or simple carbohydrates. Glucose, also known as blood sugar, and fructose, also known as fruit sugar, are examples of monosaccharide sugar molecules. A disaccharide is composed of two monosaccharides (i.e. two sugar molecules). Maltose, for example, is a disaccharide composed of two glucose monosaccharides, and sucrose (or table sugar) is a disaccharide composed of a glucose monosaccharide and a fructose monosaccharide. There are many different types of carbohydrates, but all carbohydrates are built from the basic CH 2 O molecule. Glucose, for example, is a carbohydrate composed of six of these basic CH 2 O molecules attached together. The basic unit of a sugar molecule is a monosaccharide. 1 person found this useful. Edit. Share to: Eccles-Jordan Trigger Circuit. 73,415 Contributions. This circuit is used in almost every electronic digital computer ever built & was invented in 1918 (patent GB148582). No, the atom is the basic unit for elements. An element consists of one type of atom; iron consists of iron atoms, sulfur consists of sulfur atoms, and so on. A molecule of sucrose. Glucose and fructose are monosaccharide sugars. A monosaccharide is the smallest unit of sugar, mono meaning 1. Sucrose is commonly called table sugar and is a disaccharide. A disaccharide is a sugar that is made up of two sugar units, di meaning 2. Sucrose is produced as glucose and fructose are joined together by a condensation reaction. In the process a water molecule is eliminated. See the following equation The basic chemical unit from which carbohydrates are made is the CH 2 O molecule. Essentially, this basic carbohydrate unit is just a water molecule (i.e. H 2 O) with a carbon atom (i.e. C), attached. There are many different types of carbohydrates, but all carbohydrates are built from the basic CH 2 O molecule. Glucose, for example, is a carbohydrate composed of six of these basic CH 2 O molecules attached together. The basic unit of carbohydrate is a single sugar molecule, a monosaccharide (monomeans one). When two sugar molecules combine, they form a disaccharide (di meanstwo). Monosaccharides and disaccharides are known as simple sugars or simple carbohydrates. 
https://en.wikipedia.org/wiki/Polysaccharide https://answers.yahoo.com/question/index?qid=20080615092806AAchtMn http://www.shapesense.com/nutrition/articles/carbohydrates.aspx http://www.answers.com/Q/What_is_a_basic_unit_of_a_sugar_molecule http://www.chemicalformula.org/sugar http://www.shapesense.com/nutrition/articles/carbohydrates.aspx http://www.expertsmind.com/library/asic-unit-of-carbohydrate-is-single-sugar-molecule-5209110.aspx
which is a basic unit of a sugar molecule