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Water, pH and Macromolecules

Water, pH and Macromolecules
Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages.

covalent
hydrogen
noncovalent
ionic

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

covalent bonds
hydrogen atoms
hydrogen bonds
carbon atoms

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

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

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Water, pH and Macromolecules
The pH of a solution is determined by

concentration of salt
environmental effect
relative concentration of acids and bases
dielectric constant of the medium

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Water, pH and Macromolecules
H2O and CH4 are both examples of

molecules
acids
none of these
ions

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

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