Abiologist is studying a structure that is made up of two layers of phospholipids. what is she most likely studying? dna molecules cell membranes fats wax

The structure the biologist is most likely studying is the cell membrane. The cell membrane is made up of lipid bilayers {two layers} with embedded proteins. The basic structure of the cell membrane is the phospholipid bilayer which forms a balance barrier between two aqueous environment. This structure optimizes the cell membrane to control the movement of substances in and out of the cell.

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass