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Water, pH and Macromolecules

Water, pH and Macromolecules
The dissociation constant of H2O at 25° C is

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

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Water, pH and Macromolecules
Which of the following organic groups are found in naturally occuring amino acids?

Guanidinium ion
All of these
Imidazole
Indole

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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 negative charge
are not important for the properties of water
carry a partial positive charge

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

Theodor Kocher
Otto Warburg
Karl Landsteiner
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

carbon atoms
covalent bonds
hydrogen atoms
hydrogen bonds

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

ions
none of these
acids
molecules

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