Lipids have a polar "head" and a non-polar a non polar "tail", which makes them: A bord with water.
B. amphipathic
C useless for cell membranes.
D. non-reactive.

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

What do nitrifying bacteria convert

Ture or false evidence for evolution includes millions of fossils