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Water, pH and Macromolecules

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

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

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Water, pH and Macromolecules
Who discovered and described the blood groups (ABO) classification?

Otto Warburg
Theodor Kocher
Karl Hooper
Karl Landsteiner

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Water, pH and Macromolecules
The lone pair electrons on oxygen in a H20 molecule

are not important for the properties of water
carry a partial positive charge
form covalent bonds in ice
carry a partial negative charge

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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?

DNA
Protein
Phospholipid
Strong base

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Water, pH and Macromolecules
The reactions of molecules

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

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Water, pH and Macromolecules
Weak acids generally have pKa

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

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