Lipids are classed as more energy-rich storage compounds than carbohydrates.
Which of A - D explains why?
☐ | A | Lipids contain energy-rich ester bonds whereas carbohydrates contain glycosidic bonds which are less energetic | |
☐ | B | Lipids contain a lower proportion of oxygen than carbohydrates | |
☐ | C | Lipids can be stored as fat droplets and held in specialised tissue under the skin and around the major organs | |
☐ | D | Lipids contain C=C double bonds which increases their energy content |
The ester bond plays an important role in the biochemistry of lipids.
Describe the role of the ester bond within lipids and the mode of ester bonds' formation and breakage. You may use a suitable illustration in your answer.
Lipids have many roles within an animal's body. The following list shows four of those roles.
- energy storage
- insulation
- cellular structure
- protection
For each of roles 1 - 4, give one example of how lipids play the roles listed.
Role |
Example | |
1 | energy storage | |
2 | insulation | |
3 | cellular structure | |
4 | protection |
Compare and contrast the structures of saturated and unsaturated fatty acids.
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