<P> Phospholipids are effective natural surfactants that have important biological functions </P> <Li> <P> Cross section view of the structures that can be formed by phospholipids . They can form a micelle and are a vital in forming cell membranes </P> </Li> <P> Cross section view of the structures that can be formed by phospholipids . They can form a micelle and are a vital in forming cell membranes </P> <Table> <Tr> <Th> </Th> <Th> Formula </Th> <Th> Description </Th> <Th> Example </Th> <Th> Name </Th> </Tr> <Tr> <Th> Polar </Th> <Td> AB </Td> <Td> Linear molecules </Td> <Td> CO </Td> <Td> Carbon monoxide </Td> </Tr> <Tr> <Td> HA </Td> <Td> Molecules with a single H </Td> <Td> HF </Td> <Td> Hydrogen fluoride </Td> </Tr> <Tr> <Td> A OH </Td> <Td> Molecules with an OH at one end </Td> <Td> C H OH </Td> <Td> Ethanol </Td> </Tr> <Tr> <Td> O A </Td> <Td> Molecules with an O at one end </Td> <Td> H O </Td> <Td> Water </Td> </Tr> <Tr> <Td> </Td> <Td> Molecules with an N at one end </Td> <Td> NH </Td> <Td> Ammonia </Td> </Tr> <Tr> <Th> Nonpolar </Th> <Td> </Td> <Td> Diatomic molecules of the same element </Td> <Td> O </Td> <Td> Dioxygen </Td> </Tr> <Tr> <Td> </Td> <Td> Most carbon compounds </Td> <Td> CO </Td> <Td> Carbon dioxide </Td> </Tr> </Table>

What is the origin of polarity in molecular compounds