Question

Jill has a beaker. In this beaker there are two layers. The top layer is transparent with a yellow tint to it, and the bottom layer is transparent and clear. Jill decides that the bottom layer is probably water. But what is the top layer? The top layer is most likely a

Answer 1

The top layer is most likely a layer of lipids.

Lipids and water form two layers because of the nature (hydrophobic) of lipids. Lipids are biomolecules that do not mix with water. Lipids can be solubile in organic solvents, such as chloroform, but they are insolubile in water.