7.both slicing an apple and a chemical change such as cooking an egg cannot be reversed. however, why is slicing an apple still considered only a physical change?

the question isn't complete here so i can't right an answer '_'

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.