GED Science Practice

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What role does cholesterol play in the body?

  1. Energy storage

  2. Structural support

  3. Cell membrane flexibility

  4. Component of cell walls

The correct answer is: Cell membrane flexibility

Cholesterol plays an important role in maintaining the flexibility of cell membranes. It is responsible for creating a fluid and flexible barrier between the interior and exterior of the cell, allowing for the exchange of nutrients and waste products. Option A, energy storage, is incorrect as cholesterol does not store energy in the body. Option B, structural support, is also incorrect as cholesterol is not responsible for providing structural support to cells. Option D, component of cell walls, is incorrect as cholesterol is a component of the cell membrane, not the cell wall.

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