GENERAL BIOLOGY Quiz: Lipids Worksheet and Answer Key
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A lipid is an organic molecule that is insoluble in water. Triglyceride: label the below lipids as either saturated or unsaturated. Unsaturated fatty acids: if a lipid molecule contains at least one double bond it is unsaturated, label the parts of the below lipid molecule. Glycerol: lipids are found in, bread, oils/fats/waxes, meat, chocolate. Because lipids are non-polar molecules, they are insoluble in polar solvents such as water. Lipids have this property, which allows our bodies to use them as waterproof barriers and biological membranes: label the polar and non-polar ends of the representation of a lipid below: One of the key parts that make up a lipid is glycerol (a type of alcohol). Alcohol is recognizable by its hydroxyl (-oh) groups: draw a box around each oh group. The molecular formula for glycerol is c 3 h 8 o 3. Glycerol: another key component of lipids is a fatty acid. A fatty acid is recognizable by its carboxyl group.
