Biology
Grade-9
Easy

Question

What is the name of part A in the diagram given below?

  1. Protein
  2. Vitamin
  3. Carbohydrate
  4. Lipid

hintHint:

The lipid bilayer is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells.

The correct answer is: Lipid


    • A lipid bilayer is a biological membrane consisting of two layers of lipid molecules.
    • Each lipid molecule, or phospholipid, contains a hydrophilic head and a hydrophobic tail.
    • The tail regions, being repelled by water and slightly attracted to each other, congregate together. 

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