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

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

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Water, pH and Macromolecules
Which of the following statements about covalently bonded molecules is false?

Electrons are shared between the atoms that make up the molecule
The chemical bonds that hold the molecule together are relatively strong
Such molecules often result from the interaction of ionized atoms
Noncovalent bonds may also be present, especially if the molecule is large

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