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Water, pH and Macromolecules

Water, pH and Macromolecules
Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages.

covalent
noncovalent
ionic
hydrogen

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

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Water, pH and Macromolecules
The elements oxygen, nitrogen, and carbon

contain protons and neutrons in their atomic nuclei
All of these
are common elements in the molecules that make up living organisms
can all form covalent bonds with other elements

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

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

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

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Water, pH and Macromolecules
The pH of a solution is determined by

relative concentration of acids and bases
concentration of salt
dielectric constant of the medium
environmental effect

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