Biological Molecules

Examples of different lipids, including their structure, main role and any other features they have. 

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1. What are the other features of phospholipid?

  • Phosphate group may have carbohydrate parts attached- these glycolipids are involved in cell signalling.
  • Used to form steroid hormones
  • Stored as fat which also has thermal insulation and protective properties.
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Other questions in this quiz

2. Describe the main role of a triglyceride

  • Compact energy store, insoluble in water so doesn't affect cell's water potential.
  • Glycerol plus two fatty acids and phosphate group
  • Glycerol plus three fatty acids.

3. What is the main role of Cholesterol?

  • Forms a small, thin molecule that fits into the lipid bilayer giving strength and stability.
  • Forms a molecule that is part hydrophobic, part hydrophilic the ideal basis for cell membranes.
  • Stored as fat, which also has thermal insulation and protective properties.

4. What lipid has four carbon based ring structures joined together

  • Cholesterol
  • Carbohydrate
  • Protien

5. What is the described lipid- the structure is a Glycerol with three fatty acids

  • Cholesterol
  • Triglyceride
  • Phospholipid

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