AP BIOLOGY

Detailed explanation-1: -The monosaccharides are absorbed by the small intestine and released into the blood stream. The monosaccharides are carried by the blood to the liver, where fructose and galactose are converted into glucose. Glucose is the primary monosaccharide used by the body for energy.

Detailed explanation-2: -Monosaccharides can be classified by the number x of carbon atoms they contain: triose (3), tetrose (4), pentose (5), hexose (6), heptose (7), and so on. Glucose, used as an energy source and for the synthesis of starch, glycogen and cellulose, is a hexose.

Detailed explanation-3: -The most important monosaccharide for living things is glucose. It is the main source of chemical energy used for cell functions in all organisms, from bacteria to humans. Plants and certain microorganisms can manufacture glucose through photosynthesis.

Detailed explanation-4: -The three main monosaccharides that we consume are fructose, galactose and glucose. These monosaccharides combine in various pairs to form the three disaccharides that are most important in human nutrition: lactose, maltose and sucrose. The monosaccharide glucose is the common thread in each of these disaccharides.

Detailed explanation-5: -The most nutritionally important and abundant monosaccharide is glucose, which is used as the major cell fuel in the human body and can be found unbound in body tissues and fluids. Glucose is the building block of several polysaccharides. Galactose and fructose are also used as cell fuel.