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

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

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

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

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Water, pH and Macromolecules
Which of the following character does not apply to water?

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

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