Key Takeaways

KEY TAKEAWAYS

• There are four types of biomolecules, including carbohydrates, proteins, lipids, and nucleic acids. • Lipids can be simple fatty acids, phospholipids, and sterols, which have somewhat different properties. • Peptides and proteins are made from combinations of amino acids. They have different structural features depending on what amino acids are in the peptide chain. • The major polysaccharides in nature are glycogen, starch, and cellulose. • Polysaccharides and disaccharides are made from glycosidic linkages between certain carbohydrate monomers. • Biochemical techniques can be used to identify pathogens according to different characteristics inside the cell or on the cell membrane itself.