Which molecules prevent cell membranes from dissolving in water?

Phospholipids; they each have pairs of hydrophobic fatty acids that do not like water and other polar substances.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy