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Classification of Lipids

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Questions and Answers

What is the main characteristic of lipids?

Solubility in water

Contain phosphorus and nitrogen

Insolubility in organic solvents (correct)

Formation with short hydrocarbon chains

Which classification system of lipids is the most commonly used?

Simple lipids (correct)

Complex lipids

Derived lipids

Bloor's classification

What is the main difference between simple triacylglycerols and mixed triacylglycerols?

Formation of a negative charge

Number of carbon atoms in the fatty acids

Presence of phosphorus in the structure

Degree of unsaturation of the fatty acids (correct)

What is the physical state of oils at 20°C?

Liquid Signup and view all the answers

What kind of fatty acids are generally found in oils of plant origin?

Polyunsaturated fatty acids Signup and view all the answers

What is the composition of simple lipids?

Esters of fatty acids with glycerol Signup and view all the answers

Which statement about triacylglycerols is true?

Mixed triacylglycerols usually have saturated fatty acids on carbon 2. Signup and view all the answers

What distinguishes waxes from neutral fats?

Waxes contain alcohol groups different from those in neutral fats. Signup and view all the answers

What is the main difference between simple and complex lipids?

Simple lipids are derived from other lipid categories. Signup and view all the answers

Which statement is correct about oils at 20°C?

Oils with short chain triglycerides are in liquid state at 20°C. Signup and view all the answers

What are the main constituents of triacylglycerols?

Glycerol and fatty acids Signup and view all the answers

Why are oils generally of plant origin?

Due to the higher proportion of unsaturated fatty acids in plant oils. Signup and view all the answers

Which type of triacylglycerols contain the same kind of fatty acid in all three positions?

'Simple' triacylglycerols Signup and view all the answers