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?

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

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

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

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Water, pH and Macromolecules
Which of the following character does not apply to water?

The covalent bonds in water are highly polarized
The water molecule readily forms hydrophobic interactions
All three atoms in the water molecule readily form hydrogen bonds
The water molecule is asymmetric

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