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Water, pH and Macromolecules

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

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

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Water, pH and Macromolecules
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

Protein
DNA
Strong base
Phospholipid

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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
It will be attracted to water
It will form a membrane in water
be repelled by water

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Water, pH and Macromolecules
What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7?

7
5 x 10-7
7 x 10-7
1 x 10-7

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

none of these
molecules
ions
acids

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

Karl Hooper
Theodor Kocher
Otto Warburg
Karl Landsteiner

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