Water, pH and Macromolecules
Hydrogen bonds and hydrophilic interactions are types of

weak chemical bonds that link together separate molecules
strong chemical bonds that hold together the atoms within a molecule
weak chemical bonds that hold together the atoms within a molecule
strong chemical bonds that link together separate molecules

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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
Nonpolar substances like oils are not soluble in it
All of these
It is critical for many of the chemical processes found in living systems

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Water, pH and Macromolecules
Buffer solutions

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

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