The cell membrane of nearly all organisms is primarily made up of a phospholipid bilayer, a micelle of hydrophobic fatty acid esters with polar, hydrophilic phosphate "head" groups.
ðə sˈɛl mˈɛmbɹeɪn ʌv nˌɪɹli ˈɔːl ˈɔːɹɡənˌɪzəmz ɪz pɹaɪmˈɛɹᵻli mˌeɪd ˌʌp əvə fˈɑːsfəlˌɪpɪd bˈɪleɪɚ, ɐ maɪsˈɛl ʌv hˌaɪdɹəfˈoʊbɪk fˈæɾi ˈæsɪd ˈɛstɚz wɪð pˈoʊlɚ, hˌaɪdɹəfˈɪlɪk fˈɑːsfeɪt "hˈɛd" ɡɹˈuːps.