Final answer:
Sucrose is a disaccharide, not a monomer, and is composed of the monosaccharides glucose and fructose. Monosaccharides are the simplest form of carbohydrates and serve as monomers for creating complex carbohydrates like disaccharides and polysaccharides.
Step-by-step explanation:
Sucrose is not the monomer of lipids, starches, carbohydrates in general, or proteins. Instead, sucrose itself is a disaccharide, which is a type of carbohydrate composed of two monosaccharide units. In the case of sucrose, these units are glucose and fructose.
A monomer is a single, smaller molecule that can join to form polymers. Monosaccharides, such as glucose and fructose, are the simplest form of carbohydrates serving as the monomers for more complex carbohydrates. When these monomers join together through a dehydration reaction, they form glycosidic bonds, creating disaccharides like sucrose.
To clarify with the options provided: cellulose and starch are polysaccharides, C6H12O6 is the chemical formula for a hexose monosaccharide, and lactose is another disaccharide made of glucose and galactose joined by a glycosidic bond, not sucrose.