Water, pH and Macromolecules
The reactions of molecules

require an enzyme in all cases
are the reactions of the functional groups
are independent of the functional groups
All of these

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

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

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

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

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