Q130
General ScienceBiology
Which is not a constituent of cell membrane?
- a.Glycolipids
- b.Phospholipids
- c.Cholesterol
- d.Proline
Answer: (D) Proline
The fluid-mosaic cell membrane is a phospholipid bilayer containing cholesterol, proteins and glycolipids. Proline is a free amino acid; it is found inside proteins but is not itself a membrane constituent.