CHEM 210 Module 5 Exam Newest
2026/2027
1. How is the definition of lipid different from protein and carbohydrate?: Thelipid
definition is based on the functional definition of being soluble in a non-polar
solvent. Proteins and carbohydrates are based on the structure.
2. What are three functions of lipids?: Any three of: energy, storage, vitamin,
protection, and insulation
3. How does the omega numbering system differ from the simplified nota- tion?: The
simplified notation starts number at the carboxylic acid, while the omegasystem starts
at the opposite end - from the -CH3.
4. What does unsaturated mean for a fatty acid?: Unsaturated indicates that oneor
more double bonds are present.
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, 5. What is the difference between a fat and oil?: An oil is a lipid that is a liquid atroom
temperature, while fat is a solid at room temperature.
6. How are phosphoglycerides similar to triacylglycerols? How they different?-
: similar: Both have glycerol as a backbone structure. Both have fatty acids attachedto
the glycerol.
Differences: phosphoglycerides have two fatty acids attached to the glycerol and, as
the name implies, triacylglycerols have three fatty acids. Phosphoglyceride hasa
polar head group attached.
7. What is the primary function of phosphoglycerides mentioned in this mod-ule?:
forming membrane bilayers
8. Describe at least two functions of sphingolipids.: They serve as blood group
determinants, the structure of membrane bilayers, and in the myelin sheath of
2/5
2026/2027
1. How is the definition of lipid different from protein and carbohydrate?: Thelipid
definition is based on the functional definition of being soluble in a non-polar
solvent. Proteins and carbohydrates are based on the structure.
2. What are three functions of lipids?: Any three of: energy, storage, vitamin,
protection, and insulation
3. How does the omega numbering system differ from the simplified nota- tion?: The
simplified notation starts number at the carboxylic acid, while the omegasystem starts
at the opposite end - from the -CH3.
4. What does unsaturated mean for a fatty acid?: Unsaturated indicates that oneor
more double bonds are present.
1/5
, 5. What is the difference between a fat and oil?: An oil is a lipid that is a liquid atroom
temperature, while fat is a solid at room temperature.
6. How are phosphoglycerides similar to triacylglycerols? How they different?-
: similar: Both have glycerol as a backbone structure. Both have fatty acids attachedto
the glycerol.
Differences: phosphoglycerides have two fatty acids attached to the glycerol and, as
the name implies, triacylglycerols have three fatty acids. Phosphoglyceride hasa
polar head group attached.
7. What is the primary function of phosphoglycerides mentioned in this mod-ule?:
forming membrane bilayers
8. Describe at least two functions of sphingolipids.: They serve as blood group
determinants, the structure of membrane bilayers, and in the myelin sheath of
2/5
