- Life Sciences
the spontaneous, passive movement of water molecules from an area of higher water concentration (higher water potential) to an area of lower water concentration (lower water potential) across a differentially permeable membrane, until the concentration is the same in both regions.
a hard granule of crystallised minerals which forms in the kidney.
broad group (taxon) in the biological classification system, which is then divided into kingdoms...
coiled nephron tubule that extends from the loop of Henlé to the collecting duct.
two bean-shaped guard cells surrounding a pore in the epidermis of a leaf that allow gases to...