A phospholipid molecule has a head and two tails, The tails are found

At the surfaces of the membrane

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In the interior of the membrane

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Spanning the membrane

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Both (a) and (b)

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Solution

The correct option is B In the interior of the membrane
In a cell membrane, the hydrophobic ends of phospholipid molecules in the outer monolayer of the membrane are sandwiched between the hydrophilic heads of the phospholipid bilayer and are not exposed to the environment.

So, the correct answer is 'In the interior of the membrane'.

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