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.
This all depends on the type of soapstone slab the homeowner chooses. Typically, soapstone can start at approximately $25 per square foot, and of course, the cost increases from there to as much as $95 per square foot for the thicker slabs of soapstone.