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Water, pH and Macromolecules

Water, pH and Macromolecules
The reason that fats contain more energy than simple sugars, is fats have many more

hydrogen bonds
hydrogen atoms
carbon atoms
covalent bonds

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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?

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

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Water, pH and Macromolecules
What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7?

5 x 10-7
1 x 10-7
7 x 10-7
7

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

its conjugate base
a hydronium ion
its conjugate acid
highly reactive

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Water, pH and Macromolecules
The dissociation constant of H2O at 25° C is

1014 M
107 M
10-14 M
10-7 M

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Water, pH and Macromolecules
The reactions of molecules

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

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