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Questions and Answers
What is the main function of lipids in living organisms?
What is the main function of lipids in living organisms?
- Serving as long-term energy storage
- Acting as a boundary for cells (correct)
- Forming hormones like testosterone and estrogen
- Providing insulation to the body
Which type of fatty acids is solid at room temperature?
Which type of fatty acids is solid at room temperature?
- Unsaturated fatty acids
- Saturated fatty acids (correct)
- Monounsaturated fatty acids
- Trans fatty acids
What is the main constituent of a lipid polymer called a triglyceride?
What is the main constituent of a lipid polymer called a triglyceride?
- Fatty acids (correct)
- Steroids
- Phospholipids
- Cholesterol
Which of the following is an example of a lipid?
Which of the following is an example of a lipid?
What type of bonds do unsaturated fatty acids have between carbon atoms?
What type of bonds do unsaturated fatty acids have between carbon atoms?
What is the primary element in lipids?
What is the primary element in lipids?
Which macromolecules form the basis of lipids?
Which macromolecules form the basis of lipids?
What type of bonds do saturated fatty acids have between carbon atoms?
What type of bonds do saturated fatty acids have between carbon atoms?
Which of the following is NOT a type of lipid?
Which of the following is NOT a type of lipid?
What is the main function of triglycerides in living organisms?
What is the main function of triglycerides in living organisms?
Which of the following is a saturated triglyceride?
Which of the following is a saturated triglyceride?
What types of macromolecules make up cell membranes in living organisms?
What types of macromolecules make up cell membranes in living organisms?
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Study Notes
- Lipids are essential components of every cell membrane in living organisms.
- They are part of the phospholipid membrane that acts as a boundary for cells.
- Lipids include not only fats but also oils, waxes, and steroids.
- Steroids such as cholesterol and hormones like testosterone and estrogen are lipids.
- Lipids are large organic macromolecules made up of carbon, hydrogen, and oxygen.
- Monomers called fatty acids form lipids through chemical bonds.
- Saturated fatty acids have single bonds between carbon atoms, making them solid at room temperature.
- Unsaturated fatty acids have double bonds between carbon atoms, making them liquid at room temperature.
- A lipid polymer called a triglyceride forms when three fatty acids bond to a glycerol molecule.
- Saturated triglycerides contain only saturated fatty acids, while unsaturated triglycerides have unsaturated fatty acids.
- Lipids play various roles in living organisms, including cell membranes, long-term energy storage, insulation, and hormone formation.
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