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Water, pH and Macromolecules

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

Theodor Kocher
Karl Hooper
Karl Landsteiner
Otto Warburg

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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)
temperature of buffer components
molar concentration of the buffer components

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

Indole
All of these
Guanidinium ion
Imidazole

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

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

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

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

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

hydrogen bonds
covalent bonds
hydrogen atoms
carbon atoms

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