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In a Cell Membrane, Why Must the Hydrophobic and Hydrophilic

Question 40

Multiple Choice

In a cell membrane, why must the hydrophobic and hydrophilic molecules of the phospholipid bilayer arrange in a strict orientation?


A) Hydrophobic tails face outwards to prevent too much water entering the cell, which would otherwise result in the cell lysing.
B) Hydrophilic heads face inwards so that water is drawn in to the cell to maintain H2O levels.
C) Hydrophilic tails face inwards and hydrophobic heads face outwards to maintain the structural and functional integrity of the membrane, thus controlling the movement of solutes.
D) Hydrophilic heads face inwards and hydrophobic tails face outwards to maintain the structural and functional integrity of the membrane, thus controlling the movement of solutes.
E) Hydrophobic tails face inwards and hydrophilic heads face outwards to maintain the structural and functional integrity of the membrane, thus controlling the movement of solutes.

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