| Front | List 3 functions of phospholipids in a plasma membrane |
| Back | Allow the entry and exit of lipid-soluble substancesPrevent the entry and exit of water-soluble substancesRender the membrane as flexible and self-sealing |
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| Front | Describe the structure of phospholipids |
| Back | The hydrophilic head points to the outside of the of the cell-surface membrane as it attracts waterThe hydrophobic tail points to the outside of the cell-surface membrane as it repels water |
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| Front | Describe cholesterol and explain its role in a phospholipid bilayer |
| Back | Prevent the loss of water and dissolved ions, by virtue of cholesterol's hydrophobic nature.Provide mechanic strength, which reduces lateral movement of molecules including phospholipidsDecrease the fluidity of the membrane at high temperatures |
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