By structure, it is a porous membrane (with pores) which permits the motion of selective substances in and out on the cell. Besides this, the cell membrane also protects the cellular part from injury and leakage. Golgi equipment – This inner membrane complex could be considered such as endoplasmic reticulum’s https://thoughtthreads.net/exploring-recombinant-antibody-production-a-focus-on-mammalian-cell-systems/