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Water, pH and Macromolecules

Water, pH and Macromolecules
The strength of an acid depends on

number of double bonds
number of protons released
number of neutrons gain
electronegativity

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Water, pH and Macromolecules
The reason that fats contain more energy than simple sugars, is fats have many more

covalent bonds
hydrogen atoms
hydrogen bonds
carbon atoms

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Water, pH and Macromolecules
Which of the following acid/base pairs act as natural buffers in living systems?

H2CO3/HCO3-
H2PO4-/HPO42-
All of these
Histidine+/histidine

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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?

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

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

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Water, pH and Macromolecules
The reactions of molecules

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

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