CHEM 104 Exam #3| Questions & Answers (100 %Score) Latest Updated 2024/2025
Comprehensive Questions A+ Graded Answers | With Expert Solutions
The reaction of butanoic acid and dimethylamine gives - N,N-dimethylbutanamide
What are the two types of lipids? - 1. contain fatty acid
2. contain steroid
What are the five categories of lipids? - 1. energy storage
2. membrane
3. emulsification
4. messenger
5. protective coating
Energy storage lipids are? - triacylglycerols
Membrane lipids - phospholipids
spingoglycolipids
cholesterol
Emulsification lipids are? - bile acids
Messenger lipids - steroid hormones
eicosanoids
Protective coating lipids - biological waxes
What are three types of fatty acids - saturated
monounsaturated
, polyunsaturated
What is a polyunsaturated fatty acid? - a fatty acid chain with two or more carbon-carbon double bonds
What are two types of unsaturated fatty acids? - Omega 3
omega 6
What are the essentially important omega 3 and omega 6 acids? - linolenic
linoleic
Fish oils are? - omega 3
Vegetable oils are? - omega 6
What does melting point depend on in lipids? - 1. length of C chain
2. degree of unsaturation or number of double bonds in a molecule
How is a triacylglycerol formed? - Esterification of 3 fatty acids to a glycerol
What are two types of triacylglycerols? - simple-three identical fatty acids are esterified
mixed triacylglycerol- triester formed from esterification with more than one kind of fatty acid
Trans -unsaturated fatty acids have ________ melting points than cis -unsaturated fatty acids because
____________ - trans -unsaturated fatty acids pack together in close parallel alignment
The order of fats, from highest health risk to lowest - trans → saturated → cis
What happens during hydrogenations of oils? - the cis double bonds are converted to trans bonds which
are more stable and cause a change in the fatty acid structure
Comprehensive Questions A+ Graded Answers | With Expert Solutions
The reaction of butanoic acid and dimethylamine gives - N,N-dimethylbutanamide
What are the two types of lipids? - 1. contain fatty acid
2. contain steroid
What are the five categories of lipids? - 1. energy storage
2. membrane
3. emulsification
4. messenger
5. protective coating
Energy storage lipids are? - triacylglycerols
Membrane lipids - phospholipids
spingoglycolipids
cholesterol
Emulsification lipids are? - bile acids
Messenger lipids - steroid hormones
eicosanoids
Protective coating lipids - biological waxes
What are three types of fatty acids - saturated
monounsaturated
, polyunsaturated
What is a polyunsaturated fatty acid? - a fatty acid chain with two or more carbon-carbon double bonds
What are two types of unsaturated fatty acids? - Omega 3
omega 6
What are the essentially important omega 3 and omega 6 acids? - linolenic
linoleic
Fish oils are? - omega 3
Vegetable oils are? - omega 6
What does melting point depend on in lipids? - 1. length of C chain
2. degree of unsaturation or number of double bonds in a molecule
How is a triacylglycerol formed? - Esterification of 3 fatty acids to a glycerol
What are two types of triacylglycerols? - simple-three identical fatty acids are esterified
mixed triacylglycerol- triester formed from esterification with more than one kind of fatty acid
Trans -unsaturated fatty acids have ________ melting points than cis -unsaturated fatty acids because
____________ - trans -unsaturated fatty acids pack together in close parallel alignment
The order of fats, from highest health risk to lowest - trans → saturated → cis
What happens during hydrogenations of oils? - the cis double bonds are converted to trans bonds which
are more stable and cause a change in the fatty acid structure
