6 Questions
Which of the following is a role of lipids in living organisms?
Cell structure and boundary
What elements make up lipids?
Carbon, hydrogen, and oxygen
What type of fatty acids have double bonds between carbon atoms?
Unsaturated fatty acids
What is the function of cholesterol in the body?
Hormone formation
What happens when three fatty acids bond to a glycerol molecule?
Formation of triglycerides
What type of triglycerides contain only saturated fatty acids?
Saturated triglycerides
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.
Test your knowledge about lipids, essential components of cell membranes, fats, oils, waxes, and steroids. Learn about their composition, functions, and roles in living organisms.
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