Is the least common but most serious illness caused by heat exposure, occurring when the body is subjected to more heat than it can handle and normal mechanisms for getting rid of the excess heat are overwhelmed?

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.

not always but somethings can be reproduced in a laboratory.