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.
Thereâs no doubt that with either product youâre going to have to be digging deep into your pockets. A slab of granite is usually priced starting at $60 a square foot but the prices rise quickly from that point on. For quartz countertops, youâll generally be paying anywhere from $67 up to $95 per square foot. For a 28 ft.Â² counter made of quartz youâll have to budget for approximately $2200 â $3100.