1.

(21Where do the lipids and proteins constituting the cell membrane getsynthesized? Why plasma membrane is called selectively permeablemembrane?

Answer»

Lipids present in the cell membrane are synthesized in the smooth endoplasmic reticulum.Plasma membrane is called semi permeable membrane as it allows certain molecules to pass through it while stops others. According to the need of the cells, it selectively allows diffusion of molecules.



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