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Water, pH and Macromolecules

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

Theodor Kocher
Karl Landsteiner
Otto Warburg
Karl Hooper

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

hydrogen atoms
hydrogen bonds
covalent bonds
carbon atoms

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

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

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

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

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

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

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