Question

Ons of

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fused
Come
1 Why is the phospholipid bilayer only partially permeable to water?
Water is repelled by the polar tails of the phospholipid.
Water is repelled by the polar head of the phospholipid.
Water is repelled by the hydrophobic tails of the phospholipid
D Water is repelled by the hydrophobic head of the phospholipid

Answer 1

The correct option is C) Water is repelled by the hydrophobic tails of the phospholipid.

Step-by-step explanation:

The cell membrane is made up of phospholipids. The phosphates make up the head and are hydrophilic. The lipids make up the tail and re hydrophobic. The cell membrane is double layered with the heads pointing outwards and the tails embedded inwards. As lipids do not dissolve in water, hence the cell membrane is partially permeable for water. The tails made up of lipids are hydrophobic and hence repel water.