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
Michaelis-Menten equation
Haldanes equation
Henderson-Hasselbalch equation

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Water, pH and Macromolecules
Buffer solutions

are rarely found in living systems
tend to maintain a relatively constant pH.
will always have a pH of 7
cause a decrease in pH when acids are added to them.

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Water, pH and Macromolecules
Which of the following statements about water is correct?

All of these
Polar substances that can form hydrogen bonds will dissolve in it
It is critical for many of the chemical processes found in living systems
Nonpolar substances like oils are not soluble in it

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