Lecture 4 - Membranes & Cells 9-17

Lecture 4 - Membranes & Cells 9-17 - Membranes and...

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Membranes and Cells ~ 9.17.07
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find the amino acid  of each type: (a) hydrophobic (b) polar (c) no asymmetric carbon (d) able to make disulfide bonds (e) a base (f) an acid
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Biomolecules sugars carbohydrate polymers nucleotides nucleic acids amino acids proteins lipids
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Fats energy storage Phosphoglycerides membranes Steroids e.g. cholestrol Lipids Fat-soluble (hydrophobic) naturally-occurring molecules
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C 18 H 34 O 2 C 18 H 36 O 2 Saturdated fat Unsaturdated fat stearic acid oleic acid Fatty Acids cis double bond  causes bending animal fats plant and fish fats
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Why do saturated fats have higher melting points than  unsaturated fats?
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Fats fatty acid glycerol fat molecule (triacylglycerol) compact and efficient storage of  energy dehydration  reaction H 2 O H 2 O H 2 O
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Phosphoglycerides
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Phosphoglycerides: Membranes
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Lipids characterized by a carbon skeleton with four fused rings.
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Lecture 4 - Membranes & Cells 9-17 - Membranes and...

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