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Once you have had a shot at the questions above, have a go at these questions


1. List 3 components of the plasma membrane?


2. The phospholipid has two parts a head and tail. Which part is hydrophobic and which is hydrophilic? Which part is polar and which is non-polar


3. Why do phosophlipids have a kink in one of their tails?


4. Explain the roll of a plant cells Vacuole

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