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GCSE Combined Science · key term
A biological molecule belonging to a group that includes fats and oils. Lipids act as energy stores and form part of cell membranes.
Used by OCR
Specification B1.3f · Biology Paper 1
Revise: Fatty Acids, Glycerol, and Lipid MetabolismLipids are a group of biological molecules that includes fats and oils. Fats are solid at room temperature, whereas oils are liquid. Lipids are important energy stores; they also form part of cell membranes.
Biology, Combined Science
A biological molecule, such as a fat or oil, made from fatty acids and glycerol.
Name both fatty acids and glycerol when describing the building blocks of lipids or the products of lipid breakdown.
Keep the directions clear: synthesis joins smaller molecules to make a lipid; breakdown releases fatty acids and glycerol.
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Three important groups are carbohydrates, lipids and proteins. Organisms need these molecules both as sources of fuel and as materials for building cells.
