Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

10. Lipids

Fatty Acid Nomenclature

Biochemistry

10. Lipids

Fatty Acid Nomenclature

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Arrange the following fatty acids from lowest à highest melting point: 18:1Δ⁹ ; 18:0 ; 18:3Δ^9,12,15 ; 18:2Δ^9,12

18:3Δ^9,12,15 ; 18:2Δ^9,12 ; 18:1Δ⁹ ; 18:0

18:0 ; 18:3Δ^9,12,15 ; 18:2Δ^9,12 ; 18:1Δ⁹

18:1Δ⁹ ; 18:0 ; 18:3Δ^9,12,15; 18:2Δ^9,12

18:0 ; 18:1Δ⁹ ; 18:2Δ^9,12; 18:3Δ^9,12,15

Previous problemNext problem

Verified step by step guidance

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.