Transmembrane proteins
I. are predominantly constructed of a single hydrophobic a-helix.
II. are often constructed from bundles of hydrophobic a-helices.
III. are sometimes constructed from ß-barrels with hydrophobic interiors and exteriors.
IV. may have transmembrane helices identified by the free energy of transfer to water.
A) I, III, IV
B) II, III
C) II, III, IV
D) I, IV
E) II, IV
Answer: C) II, III, IV
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Animal Biology
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