The Cell membrane, along with its integrated proteins. In prokaryotes the Cell membrane is bolstered by the [mostly cellulosic] Cell Wall; in eukaryotes the Cell membrane is bolstered by the...
Carbon dioxide, which reacts with the water in small amounts to form carbonic acid (H2CO3)
Yes, but it also contains a small amount of quinine (bitter).
fatty acids
Nonpolar fatty acid chains