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Water, pH and Macromolecules

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

covalent bonds
carbon atoms
hydrogen bonds
hydrogen atoms

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

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

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

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

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

sodium chloride
methane
argon
gasoline (heptanes & octanes)

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Water, pH and Macromolecules
A Bronsted acid becomes __________ upon losing a proton.

a hydronium ion
highly reactive
its conjugate base
its conjugate acid

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Water, pH and Macromolecules
H2O and CH4 are both examples of

none of these
ions
molecules
acids

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