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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.

noncovalent
hydrogen
ionic
covalent

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

none of these
molecules
ions
acids

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

hydrogen bonds
carbon atoms
covalent bonds
hydrogen atoms

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Water, pH and Macromolecules
The lone pair electrons on oxygen in a H20 molecule

carry a partial positive charge
form covalent bonds in ice
carry a partial negative charge
are not important for the properties of water

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

its conjugate acid
its conjugate base
a hydronium ion
highly reactive

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Water, pH and Macromolecules
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

DNA
Phospholipid
Protein
Strong base

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