19. Homework: Lipids
- Page ID
- 31934
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The following problems are meant to provide an idea of the types of questions that could be asked on exams/quizzes.
- What characteristic defines all lipids?
- Are fatty acid chains found in all lipids?
- Draw the structure of an example of each of the following types of lipids. In each drawing, circle the polar portion in each molecule.
- fatty acid
- wax ester
- triacylglycerol
- phospholipid
- steroid
- What does "unsaturated" mean?
- What is the most common type of geometry about C=C in naturally-occuring fatty acids?
- Which is the most energetically stable geometry about C=C in hydrocarbon chains?
- Which has a higher melting point, saturated or unsaturated fatty acids?
- Vegetable oil is a common lipid and is liquid at room temperature. Is this oil mostly saturated or unsaturated?
- Which is more common, fatty acids with an even or odd number of carbon atoms?
- What structural feature does an "omega-3" fatty acid have?
- Draw the product(s) of the reaction
CH3(CH2)17-O-C(=O)-(CH2)19CH3 + H2O - Draw the product(s) of the reaction
3 fatty acids + glycerol --> ??? - Draw the product(s) of the reaction
triacylglycerol + 3 OH- --> ???
What type of reaction is this? - List several benefits and a potential hazard of partial hydrogenation.
- Which is more polar, TAG or a phospholipid ?
- Which is more polar, a steroid or a phospholipid ?
- What is the primary component of cell membranes?
- Draw a "cartoon" of a micelle. Label the polar and non-polar portions.
- Draw a "cartoon" of a cell membrane. Label the polar and non-polar portions.