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Hydrophobic Core and Selective Permeability
Grade Level
AP Biology
APB.132 Hydrophobic Core and Selective Permeability
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A student model states, 'The hydrophobic core repels all molecules.' Which revision would make the model more accurate?
A
The hydrophobic core attracts only charged molecules and blocks all nonpolar molecules.
B
The hydrophobic core is unfavorable to charged and many polar solutes but can permit small nonpolar or lipid-soluble molecules.
C
The hydrophobic core has no role in permeability because only proteins matter.
D
The hydrophobic core allows every molecule to cross at equal rates if a gradient exists.
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