Why are elements called the building blocks of matter?
A. They stack up nicely.
B. They make-up all matter.
C. They make-up most of the matter around us.

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.

ya the other dude is right

i believe your answer would be c.. : )