Читать книгу Biochemistry For Dummies - John Moore T., Richard Langley H., John T. Moore - Страница 54

Many of the biological functions of substances are pH-dependent. For this reason, knowing which functional groups are acidic, basic, or neutral is important. Neutral functional groups behave the same no matter what the pH is. Table 3-2 lists the functional groups; whether they’re acidic, neutral, or basic; and, for acidic and basic groups, their weakness level (medium, weak, or very weak). The weaker a substance is in terms of pH, the less likely it’s affected by its solution pH (except under extreme pH conditions, which normally don’t occur in biological systems).

TABLE 3-2 Acid-Base Properties of Biologically Important Functional Groups