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Questions and Answers
What is the systematic name for a C18 saturated fatty acid?
What is the systematic name for a C18 saturated fatty acid?
How is a C18 fatty acid with one double bond named?
How is a C18 fatty acid with one double bond named?
How is the position of a double bond represented in fatty acids?
How is the position of a double bond represented in fatty acids?
What does the notation 18:2 signify in relation to fatty acids?
What does the notation 18:2 signify in relation to fatty acids?
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How are the carbon atoms numbered in a fatty acid?
How are the carbon atoms numbered in a fatty acid?
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What is the name for the terminal methyl carbon in a fatty acid?
What is the name for the terminal methyl carbon in a fatty acid?
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What is the most abundant lipid in nature?
What is the most abundant lipid in nature?
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What is the chemical name for neutral fats and oils?
What is the chemical name for neutral fats and oils?
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What are triglycerides esterified with three hydroxyl groups of glycerol called?
What are triglycerides esterified with three hydroxyl groups of glycerol called?
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What type of triglyceride is formed if the three fatty acids connected to glycerol are of different types?
What type of triglyceride is formed if the three fatty acids connected to glycerol are of different types?
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What are natural fats mainly composed of?
What are natural fats mainly composed of?
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What physical property differentiates fats from oils?
What physical property differentiates fats from oils?
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What is the main difference between fats and oils?
What is the main difference between fats and oils?
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What causes the yellow color of body fat or milk fat?
What causes the yellow color of body fat or milk fat?
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Study Notes
Fatty Acids
- The systematic name for a C18 saturated fatty acid is octadecanoic acid.
- A C18 fatty acid with one double bond is named octadecenoic acid.
Fatty Acid Nomenclature
- The position of a double bond in fatty acids is represented by a number that indicates the carbon atom where the double bond is located.
- The notation 18:2 signifies a fatty acid with 18 carbon atoms and 2 double bonds.
Carbon Atom Numbering
- In a fatty acid, the carbon atoms are numbered starting from the carboxyl carbon (C1) and incrementing towards the terminal methyl carbon.
Fatty Acid Structure
- The terminal methyl carbon in a fatty acid is called the omega (ω) carbon.
- Triglycerides esterified with three hydroxyl groups of glycerol are called triacylglycerols.
Mixed Triglycerides
- A triglyceride formed with three different types of fatty acids connected to glycerol is called a mixed triglyceride.
Natural Fats and Oils
- Natural fats are mainly composed of triglycerides.
- The physical property that differentiates fats from oils is their melting point, with fats being solid at room temperature and oils being liquid.
- The main difference between fats and oils is their solidity or liquidity at room temperature.
Lipid Color
- The yellow color of body fat or milk fat is caused by the presence of carotenoid pigments.
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Description
Test your knowledge on the systematic naming of fatty acids derived from their parent hydrocarbons. Learn how to name saturated and unsaturated fatty acids based on the number of double bonds.
