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Summary Chapter 4 - Transport across cell membranes $5.79
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Summary Chapter 4 - Transport across cell membranes

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A summary with all the key definitions, colourful diagrams and clearly outlined concepts you'll need to easily revise and thrive in A level Biology. On each page of this summary, there are diagrams to illustrate hard-to-imagine concepts needed to keep your interest and concentration on the topic at...

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  • Chapter 4
  • March 14, 2023
  • 10
  • 2022/2023
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Transport in cells
Across cell membranes

, Phospholipid bilayer
• Phospholipids have hydrophilic heads and
hydrophobic tails
• Hydrophilic heads point outwards, attracted
water on both sides
• Hydrophobic tails point inwards, repelled by
the water on both sides
• Allows lipid-soluble substances to enter and
exit but not water-soluble substances
• Membrane is flexible and self-sealing (it can
join up to itself easily)

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