Final answer:
Proteins in the cell membrane form pores and receptor sites for hormones. Integral proteins make up channels and transporters, whereas peripheral proteins and glycoproteins are involved in cell recognition and hormone binding.
Step-by-step explanation:
The organic molecules in the cell membrane that form pores and receptor sites for hormones are proteins. Specifically, integral proteins are involved in forming transporters and channels through which substances can enter or leave the cell. Meanwhile, peripheral proteins and glycoproteins, which are carbohydrates bound to proteins, play a role in cell recognition and hormone binding. Lipid-derived hormones can permeate the membrane and often use intracellular receptors, while peptide and amino acid-derived hormones, which are lipid insoluble, require cell surface receptors made up of proteins.