Water, pH and Macromolecules
The main difference between an acid and a base is that

bases donate hydrogen ions in water while acids accept hydrogen ions
acids are polar molecules and bases are not
acids donate hydrogen ions in water while bases accept hydrogen ions
bases are polar molecules and acids are not

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Water, pH and Macromolecules
Which of the following statements about water is correct?

Polar substances that can form hydrogen bonds will dissolve in it
It is critical for many of the chemical processes found in living systems
Nonpolar substances like oils are not soluble in it
All of these

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