The four main categories of macromolecules are:
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Carbohydrates: These are organic molecules composed of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1. They include sugars (like glucose and fructose), starches, and cellulose, serving as energy sources and structural components.
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Proteins: Made up of amino acids, proteins play critical roles in the body, including acting as enzymes, hormones, and structural components of cells and tissues. They are essential for numerous biological functions.
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Lipids: This group includes fats, oils, waxes, and steroids. Lipids are hydrophobic molecules that play key roles in energy storage, cell membrane structure, and signaling.
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Nucleic Acids: Composed of nucleotide monomers, nucleic acids include DNA and RNA. They are responsible for storing and transmitting genetic information and play vital roles in protein synthesis.
These macromolecules are fundamental to the structure and function of living organisms.