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Water, pH and Macromolecules

Water, pH and Macromolecules
A solution with pH = 5 is __________ than a solution with pH = 7.

100 times more acidic
2 times more basic
10 times more acidic
10 times more basic

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Water, pH and Macromolecules
The effectiveness or capacity of a buffer solution can be affected by

concentration of the conjugate base to the weak acid
both (a) and (b)
temperature of buffer components
molar concentration of the buffer components

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Water, pH and Macromolecules
The reactions of molecules

All of these
are the reactions of the functional groups
are independent of the functional groups
require an enzyme in all cases

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Water, pH and Macromolecules
A Bronsted acid becomes __________ upon losing a proton.

highly reactive
its conjugate base
its conjugate acid
a hydronium ion

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

be repelled by water
It will be attracted to 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
A compound that is capable of forming hydrogen bonds with water

does not dissolve well in water
is probably held together by noncovalent bonds
contains at least some polar covalent bonds
should act as a good buffer for acids and bases

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