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.
How much a quartz countertop should cost. Average costs and comments from CostHelper's team of professional journalists and community of users. Quartz countertops cost $50-$90 per square foot, or $1,500-$2,700 for a typical kitchen with 30 square feet of counter space, including professional installation. Related articles: Stone Countertop, Granite Countertop, Solid Surface Countertop, Laminate Countertop, Kitchen Countertops, Kitchen Remodeling: What should be included: Engineered stone countertops should be polished and the outer edges shaped. Quartz countertops do not need to be sealed.