What is the main lipid component of the plant cell membrane?

The cell membrane is composed of which substances?

Desmosomes or Tonofibrils are

What is the cell membrane composed of?

The diagram given below represents a fluid mosaic model of the plasma membrane. Match the components marked as $A, B, C, D$ and $E$ in the diagram below from the list $(i)$ to $(vii)$.
$(i)$ Sugar $(ii)$ Protein $(iii)$ Lipid bilayer $(iv)$ Integral protein $(v)$ Cytoplasm $(vi)$ Cell wall $(vii)$ External protein

The thickness of the bimolecular lipid layer in a cell membrane is generally: