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 form a membrane in water
It will act as a buffer and stabilize the pH

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Water, pH and Macromolecules
Buffer solutions

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

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

It is critical for many of the chemical processes found in living systems
Polar substances that can form hydrogen bonds will dissolve in it
All of these
Nonpolar substances like oils are not soluble in it

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