Phospholipids are able to form bilayer membranes in aqueous environments because
a. they have hydrophobic heads and hydrophilic tails.
b. they have polar heads and nonpolar tails.
c. they have polar tails and nonpolar heads.
d. the phospho-portion can form phosphodiester bonds between adjacent phospholipids.
e. two of these.
B
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A cut dividing the body into upper and lower portions is called a:
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A person without a gallbladder:
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