미해결 질문
Use the provided shorthand name to draw the structure of the fatty acid myristate (14:0).
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10. Lipids
Fatty Acid Nomenclature
Multiple Choice
Arrange the following fatty acids from lowest à highest melting point: 18:1Δ9 ; 18:0 ; 18:3Δ9,12,15 ; 18:2Δ9,12
A
18:3Δ9,12,15 ; 18:2Δ9,12 ; 18:1Δ9 ; 18:0
B
18:0 ; 18:3Δ9,12,15 ; 18:2Δ9,12 ; 18:1Δ9
C
18:1Δ9 ; 18:0 ; 18:3Δ9,12,15; 18:2Δ9,12
D
18:0 ; 18:1Δ9 ; 18:2Δ9,12; 18:3Δ9,12,15
검증된 단계별 안내1
Understand that the melting point of fatty acids is influenced by the degree of saturation and the length of the carbon chain. Saturated fatty acids have higher melting points than unsaturated ones due to tighter packing.
Identify the degree of unsaturation in each fatty acid: 18:0 is saturated, 18:1Δ9 has one double bond, 18:2Δ9,12 has two double bonds, and 18:3Δ9,12,15 has three double bonds.
Recognize that more double bonds (higher unsaturation) lead to lower melting points because they introduce kinks in the fatty acid chain, preventing tight packing.
Arrange the fatty acids from lowest to highest melting point based on the number of double bonds: 18:3Δ9,12,15 (three double bonds), 18:2Δ9,12 (two double bonds), 18:1Δ9 (one double bond), and 18:0 (no double bonds).
Select the correct option that matches the order: 18:3Δ9,12,15 ; 18:2Δ9,12 ; 18:1Δ9 ; 18:0.
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