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© Cengage Learning 2015
© Cengage Learning 2015
A B
CONDENSATION HYDROLYSIS
© Cengage Learning 2015
© Cengage Learning 2015
hydrophilic “head” (acidic carboxyl group)
hydrophilic “tail”
A stearic acid (saturated)
B linoleic acid, omega-6 (unsaturated)
C linolenic acid, omega-3 (unsaturated)
© Cengage Learning 2015
© Cengage Learning 2015
one layer of lipids
phosphate group
Phospholipid molecule
hydrophilic head
two hydrophobic
tails
one layer of lipids
A lipid bilayer
© Cengage Learning 2015
© Cengage Learning 2015
amine group
R group
carboxyl group
© Cengage Learning 2015
methionine
valine
methionine – valine
© Cengage Learning 2015
© Cengage Learning 2015
© Cengage Learning 2015
© Cengage Learning 2015
© Cengage Learning 2015
© Cengage Learning 2015
RNA (a nucleic acid)
© Cengage Learning 2015
ATP (a nucleotide) base (adenine)
phosphate groups
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