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Water, pH and Macromolecules

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

Karl Landsteiner
Karl Hooper
Theodor Kocher
Otto Warburg

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Water, pH and Macromolecules
Which of the following will easily dissolve in a polar solvent?

sodium chloride
argon
methane
gasoline (heptanes & octanes)

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

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

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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?

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

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Water, pH and Macromolecules
Weak acids generally have pKa

pKa values greater than 2
that cannot be used to buffer
values less than 1
been seldom found in living systems

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Water, pH and Macromolecules
Which of the following indicates that the pK of an acid is numerically equal to the pH of the solution when the molar concentration of the acid and its conjugate base are equal?

Hardy-Windberg law
Henderson-Hasselbalch equation
Haldanes equation
Michaelis-Menten equation

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