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Water, pH and Macromolecules

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

Karl Hooper
Karl Landsteiner
Otto Warburg
Theodor Kocher

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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
molar concentration of the buffer components
concentration of the conjugate base to the weak acid

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Water, pH and Macromolecules
Weak acids generally have pKa

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

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Water, pH and Macromolecules
Most of the important functional groups in biological molecules contain

oxygen and/or nitrogen and are acidic
nitrogen and a phosphate
oxygen and/or nitrogen and are polar
oxygen and a phosphate

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Water, pH and Macromolecules
Which of the following alcohols would be most soluble in water?

butanol
methanol
octanol
ethanol

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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
form covalent bonds in ice
carry a partial negative charge
carry a partial positive charge

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