APFIVE Phospholipid Bilayer Permeability
When a specific protein is incorporated into a phospholipid vesicle, the vesicle becomes permeable to glucose. Which structural feature of the phospholipid bilayer explains why this protein is necessary for glucose transport?
A
The phosphate heads repel all biological molecules
B
The glycerol backbone creates steric hindrance
C
The fatty acid tails are too rigid to allow any passage
D
The hydrophobic core prevents passage of polar molecules
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