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Water, pH and Macromolecules

Water, pH and Macromolecules
The strength of an acid depends on

electronegativity
number of neutrons gain
number of protons released
number of double bonds

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

hydrogen bonds
hydrogen atoms
covalent bonds
carbon atoms

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Water, pH and Macromolecules
A compound that is capable of forming hydrogen bonds with water

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

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

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

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Water, pH and Macromolecules
Weak acids generally have pKa

that cannot be used to buffer
values less than 1
pKa values greater than 2
been seldom found in living systems

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Water, pH and Macromolecules
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

Phospholipid
Protein
DNA
Strong base

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