The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. The energy needed for active transport is supplied by ATP.
At the second tier, you can expect to pay $60 - $70 per linear foot. You'll have some concerns about chipping and denting, but less so than at the lower tier. At the highest tier, soapstone bathroom countertops are priced at $70 - $80 per linear foot, and their durability should not be an issue. See also: Bathroom Remodeling Ideas, Options and Solutions.
Corian Price Range. Manufactured by DuPont, the Corian brand is nearly synonymous with solid surface. Though other manufacturers offer solid surface countertops, Corian pioneered the material in the 1960s. Expect to spend $45 to $80 per square foot for Corian, including installation.Corian sculpts integral sinks out of the same material so that your countertop and sink connect without seams.Your final cost will be at the upper end of the price range if you opt for a backsplash, inlay or upgraded edge profile.aminate starts at around $15 per square foot, including installation, as of May 2011. The price includes one sink or cooktop cutout, two miters and caulking.