Phospholipids

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  • Created by: sophiee96
  • Created on: 11-11-12 12:27
Why can small lipid-soluble molecules pass through the membrane easily?
Because they dissolve as the pass through the phospholipid's bilayer
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What other molecules can pass through the bilayer?
Small, uncharged
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How do phospholipids form bilayers?
One sheet of phospholipid forming over another
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In which direction do the hydrophilic heads point?
One layer points inwards and interacts with the water inside the cell cytoplasm, one layer points outwards and interacts with the water surrounding the cell
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Where do the hydrophobic tails point?
To the centre of the membrane
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What does the phospholipid component allow?
Lipid-soluble molecules to enter and leave the cell, but prevents water- soluble molecules from doing so
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What is a phospholipid composed of?
A triglyceride and phosphoric acid
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How is a phospholipid formed?
Phosphoric acid replacing one of the fatty acids of the triglyceride
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The polar end of the molecule is hydrophilic or hydrophobic?
Hydrophilic
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Why does the phosphate head attract water?
Because it is polar and attracts other polar substances
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Other cards in this set

Card 2

Front

What other molecules can pass through the bilayer?

Back

Small, uncharged

Card 3

Front

How do phospholipids form bilayers?

Back

Preview of the front of card 3

Card 4

Front

In which direction do the hydrophilic heads point?

Back

Preview of the front of card 4

Card 5

Front

Where do the hydrophobic tails point?

Back

Preview of the front of card 5
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