Carbohydrates are energy production and storage for structure. They have one carbon to two hydrogen’s to one oxygen. Carbs can also be described as sugar and starches. They have five carbons with (-OH). The monomers are glucose and fructose. 
Lipids are hydrocarbons and mainly non-polar components of cells. They include Fats (energy storage), phospholipids (cell membrane), waxes (waterproofing), and steroids (hormones). The monomers are fatty acids. 
Proteins are macromolecule. There structure is collagen in skin, keratin in hair, crystalline in eyes. All metabolic transformations, build up, rearrange and break down of organic compounds, which are done by enzymes. Oxygen in the blood is carries by hemoglobin, everything that goes in or out of cell are carried by protein. The monomers are amino acids.
Nucleic Acids they have nucleotides, which have three parts: sugar, phosphate, and a base. They store genetic information in the cell and are involved in energy and electron movement. They include RNA and DNA. They have five carbons with (-H) and ATP.
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