Water, pH and Macromolecules
Buffer solutions

are rarely found in living systems
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

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

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

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