In the fluid mosaic model of the cell surface membrane, what is the function of cholesterol?

Answer and explanation

Correct answer: B. It sits between phospholipids and regulates the fluidity and stability of the membrane

  1. Step 1: Cholesterol fits between phospholipid tails. Step 2. It stops the membrane becoming too fluid or too rigid. Answer: it regulates fluidity. Why not the others: channels and receptors are proteins and ATP gives the energy.

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