| 1. | It is a true solution of ions ( e . g . potassium , sodium , and chloride ) , small molecules ( e . g . sugars , amino acids , and atp ) , and a colloidal solution of large molecules ( e . g . proteins , lipids , and nucleic acids )
它是含离子（钾离子，钠离子还有氯离子） ，小分子（糖，氨基酸， atp ）还有大分子胶体（蛋白质，脂肪，核酸）的溶液。 |
