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Cell the Unit of Life question

2007 · Q47
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Cell the Unit of Life question

2007 · Q47

NEETBiologyCell the Unit of LifeMCQ+4 / −1
Which one of the following is not a constituent of cell membrane ?
  1. A
    Glycolipids
  2. B
    Proline
  3. C
    Phospholipids
  4. D
    Cholesterol
View written solutionFree

Correct answer: B

Chemically a biomembrane consists of lipids (20-70%), proteins (20-70%), carbohydrates (1-5%) and water (20%). The important lipids of the membrane are phospholipids (some hundred types), sterols, (e.g. cholesterol), glycolipids, sphingolipid (e.g., sphingomyelin, cerebrosides). Protein can be fibrous or globular structural carrier, receptor or enzymatic.

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