Ch 2: Chemical Principles

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16 Terms

1

ionic bond

attraction bt oppositely charged ions

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2

covalent bond

sharing of electrons

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3

hydrogen bond

weak attraction bt hydrogen atom & electronegative atom

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4

molecular weight

sum of atomic masses of all atoms in mol

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5

exchange reaction

molecules swap parts to form new compounds

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6

water is important to living systems because

temp buffer, solvent, common reactant, forms H-bond

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7

acid

donated one or more H+

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8

base

donated one or more OH-

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9

salt

contains neither H+ nor OH-

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10

____ are simple lipids, ____ are complex lipids, and ____ are ring-structured lipids

glyceral and fatty acids, phosphate, steroids

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11

lipids are bonded by ____, head is ____ and tail is ____

esther linkage, polar, nonpolar

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12

____ are building blocks of carbohydrates

monosaccharides by glycocidic bond

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13

____ are building blocks of proteins

amino acids linked by peptide bones

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14

primary, secondary, tertiary, quaternary

the sequence of aa, foldings into sheets, 3d structure, multiple polypeptide chains

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15

nucleic acid are bonded by ____

phosphodiester

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16

____ are building blocks of nucleic acids

pentose, phosphate, nitrogenous base

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