Chemical Building Blocks of Cells

The three most abundant biological macromolecules— proteins, nucleic acids, and polysaccharides—are all polymers composed of multiple covalently linked identical or nearly identical small molecules, or monomers (Figure 2-11). The covalent bonds between monomer molecules usually are formed by dehydration reactions in which a water molecule is lost:

Proteins are linear polymers containing ten to several thousand amino acids linked by peptide bonds. Nucleic acids

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Your Heart and Nutrition

Your Heart and Nutrition

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