A molecule with a high relative molecular mass, typically built from many smaller units joined by covalent bonds. Proteins and nucleic acids are examples. In dialysis, a semipermeable membrane can retain these large molecules while smaller solutes diffuse through.
Macromolecules are large, complex molecules that are essential for various biological functions. They are typically composed of thousands of atoms and include four primary types of biological macromolecules: 1. **Proteins**: These are made up of amino acids and play critical roles in biological processes, including catalyzing metabolic reactions (as enzymes), providing structural support, and regulating cellular functions. 2. **Nucleic Acids**: DNA and RNA are the two main types of nucleic acids.
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