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Which portion of the cell membrane is responsible for preventing unwanted materials from entering the cell? A. integral protein B. glycoprotein C. lipid bilayer D. cholesterol
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Which portion of the cell membrane is responsible for preventing unwanted materials from entering the cell? A. integral protein B. glycoprotein C. lipid bilayer D. cholesterol

User Marcus Tik
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C. lipid bilayer :) hope this helps!

User Megen
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The correct answer is C. lipid bilayer.

The lipid bilayer is a structural barrier that is the actually boundary of the cell. It is made of two layers of fat separated into 2 separate sheets.
User Kanak Singhal
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