10 Questions
What is the main reason why oleic acid is a liquid at room temperature?
Weak interactions among its molecules
What is the main difference in the packing of molecules between stearic acid and oleic acid?
Shape and size of the molecules
Why are plant oils typically liquid at room temperature?
Higher proportion of unsaturated fatty acids
What is the characteristic of unsaturated fatty acids that makes them reactive?
Presence of double bonds
What is the process in which unsaturated fatty acids react with molecular oxygen?
Peroxidation
What is the result of the presence of a double bond in oleic acid?
Introduces a rigid bend in the hydrocarbon chain
Why are fully saturated fatty acids typically solids at room temperature?
Due to strong hydrophobic interactions
What is the process in which unsaturated fatty acids react with hydrogen?
Hydrogenation
What is the characteristic of polyunsaturated fatty acids that makes them susceptible to peroxidation?
Multiple double bonds
What is the name of the fatty acid with 18 carbon atoms and one double bond at the 9th position?
Oleic acid
This quiz covers the relationship between saturated fatty acid chains and membrane fluidity, including the impact of temperature on the liquid crystal state.
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