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Water, pH and Macromolecules

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

molecules
none of these
acids
ions

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

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

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

hydrogen
ionic
covalent
noncovalent

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

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

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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 dissociation constant of H2O at 25° C is

1014 M
10-7 M
107 M
10-14 M

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