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Water, pH and Macromolecules

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

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

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

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

Otto Warburg
Karl Hooper
Karl Landsteiner
Theodor Kocher

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Water, pH and Macromolecules
A Bronsted acid becomes __________ upon losing a proton.

its conjugate acid
a hydronium ion
highly reactive
its conjugate base

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

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Water, pH and Macromolecules
The reactions of molecules

require an enzyme in all cases
are the reactions of the functional groups
are independent of the functional groups
All of these

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