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
All of these
Nonpolar substances like oils are not soluble in it
Polar substances that can form hydrogen bonds will dissolve in it

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Water, pH and Macromolecules
Buffer solutions

cause a decrease in pH when acids are added to them.
tend to maintain a relatively constant pH.
will always have a pH of 7
are rarely found in living systems

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