30 Questions
What is the systematic name for a C18 fatty acid with one double bond?
Octadecenoic acid
How is a C18 fatty acid with two double bonds denoted?
Octadecatrienoic acid
In the notation 18:2, what does the '2' signify?
The position of the double bond
How is the position of a double bond represented in the notation of a fatty acid?
∆ followed by a superscript number
Which carbon atom is known as the α-carbon in a fatty acid?
No. 2
What does ω9 signify in the notation of a fatty acid?
The position of the double bond
What is the most abundant type of lipids in nature?
Simple lipids
What are triglycerides esters of?
Glycerol with various fatty acids
What gives rise to monoglyceride during esterification?
Esterification of glycerol with one molecule of fatty acid
Which type of triglyceride is formed when the three fatty acids connected to glycerol are of the same type?
Simple triglycerides
What is the main difference between fats and oils?
Oils contain more unsaturated fatty acids than fats
What is the specific gravity of freshly prepared fats and oils?
Less than 1
What causes the yellow color of body fat or milk fat?
Association with carotene pigments
What chemical properties allow fats to be soluble in organic solvents like ether and benzene?
Esterification
How is a C18 fatty acid with three double bonds denoted?
Octadecatrienoic acid
What is the systematic name for a C18 fatty acid with one double bond?
Octadecenoic acid
What does the notation 18:0 signify?
A C18 fatty acid with no double bonds
From which carbon atom is the position of a double bond denoted in the notation of a fatty acid?
Carboxyl carbon
What gives rise to monoglyceride during esterification?
Glycerol and one fatty acid
What is the position of a double bond denoted by when using the notation ω9?
Counting from the distal end
What are neutral fats and oils also known as?
Triglycerides
Which fatty acids are esters of glycerol in neutral fats and oils?
Saturated fatty acids
What is the main difference between simple triglycerides and mixed triglycerides?
Number of fatty acids connected to glycerol
What is the most common fatty acid found in animal fats?
Stearic acid
What makes oils different from fats in terms of physical properties?
Presence of unsaturated fatty acids
What causes the yellow color of body fat or milk fat?
Carotene pigments
What gives rise to monoglyceride during the esterification process with glycerol?
Esterification with one molecule of fatty acid
What are natural fats primarily composed of?
Mixed triglycerides
In terms of physical properties, why do fats float on water?
They have a specific gravity less than 1.
When hydrolyzed, what do fats and oils break down into?
Fatty acids and glycerol.
Test your knowledge on the systematic naming of fatty acids based on their parent hydrocarbons and the number of double bonds. Learn to differentiate between saturated and unsaturated fatty acids based on their systematic names.
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