Phospholipids

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6 Terms

1
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Structure of phospholipids

  • Glycerol + 2 fatty acids + a phosphate group

<ul><li><p><span style="color: red"><mark data-color="yellow" style="background-color: yellow; color: inherit">Glycerol + 2 fatty acids + a phosphate group</mark></span></p></li></ul>
2
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What does hydrophobic mean?

Repels water

3
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What does hydrophylic mean?

attracts water (mixes with it)

4
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Role of phospholipids and how structure links to this

Forms the bilayer of cell membranes

  • Heads are hydrophilic - face outwards

  • Tails are hydrophobic - face inwards

  • Forms barrier to water soluble substances

<p>Forms the <span style="color: red"><mark data-color="yellow" style="background-color: yellow; color: inherit">bilayer of cell membranes</mark></span></p><ul><li><p>Heads are <span style="color: red"><mark data-color="yellow" style="background-color: yellow; color: inherit">hydrophilic - face outwards</mark></span></p></li><li><p>Tails are <span style="color: red"><mark data-color="yellow" style="background-color: yellow; color: inherit">hydrophobic - face inwards</mark></span></p></li><li><p>Forms <span style="color: red"><mark data-color="yellow" style="background-color: yellow; color: inherit">barrier</mark></span> to water soluble substances</p></li></ul>
5
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Simplified diagram of phospholipids

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6
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Difference between a phospholipid and triglyceride

Phospholipid - one fatty acid is replaced with a phosphate group