Biochemistry
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Molecular structures of fat
Slideshow describing structure of triglycerides.
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Physical structure
Notes on chemistry, biological molecules including lipids and polysaccharides.
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Protein structure animation
Shows primary, secondary, tertiary and quaternary structure.
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Proteins course
Free online course on proteins from Open University. This is an advanced level course.
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Simple chemistry for biology
Simple games to test knowledge of basic biochemistry
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The structure of proteins
Page from an A level chemistry site – this explains how amino acids are built up into 3D protein structure – and does it very well.