Water, pH and Macromolecules
If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water?

It will be attracted to water
be repelled by water
It will act as a buffer and stabilize the pH
It will form a membrane in water

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

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

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Water, pH and Macromolecules
Buffer solutions

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

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