Water, pH and Macromolecules
Most of the important functional groups in biological molecules contain

oxygen and/or nitrogen and are acidic
nitrogen and a phosphate
oxygen and a phosphate
oxygen and/or nitrogen and are polar

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

All of these
Nonpolar substances like oils are not soluble in it
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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Water, pH and Macromolecules
Which of the following character does not apply to water?

The covalent bonds in water are highly polarized
The water molecule readily forms hydrophobic interactions
The water molecule is asymmetric
All three atoms in the water molecule readily form hydrogen bonds

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