Macromolecules are very large molecules that consist of many smaller
units linked together. Macromolecules, being naturally larger than normal molecules, are categorized as polysaccharides,
nucleic acids, proteins, and lipids.
- Polysaccharides are long chains of repeating sugar units. The precursor* of polysaccharides is sugar.
- Nucleic Acids are compounds that contain phosphorous, nitrogen, carbon, hydrogen, and oxygen (i.e. RNA and DNA).
The precursor of nucleic acids is nucleotides.
- Proteins are organic compounds that consist of one or more chains of amino acids. Therefore, the precursor of proteins
is amino acids.
- Lipids are organic compounds other than carbohydrates consisting of carbon, hydrogen, and oxygen; fats, oils or waxes.
The precursor of lipids is hydrocarbons.
*Precursor-subunit (building block); tags good sections of DNA
*polymer-a large molecule formed when many smaller molecules