As odd as this may seem, the very purpose of the kidneys is to filter waste materials including urea directly out of the blood. Before urine is isolated and stored by the kidneys and bladder, it is a component of the blood.
The concentration of dissociable OH- ions is a measure of the basicity of the substance. Greater the concentration of hydroxyl ions, greater is it alkaline.
the movement of particles from areas of greater concentration to area of lesser concentration.
Diffusion
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
Passive Transport
< 7
The greater the concentration of salt in an aqueous solution, the higher the electrical conductivity. This is because, with a greater salt concentration, there are more ions available to serve as a path for electron transfer in the solution.
When comparing two solutions, the solution with the greater concentration of solute is called hypertonic. This means that it has a higher solute concentration compared to the other solution.
A solution with a greater concentration of H+ ions has a lower pH value, indicating an acidic solution, while a solution with a greater concentration of OH- ions has a higher pH value, indicating a basic solution. The concentration of H+ and OH- ions in a solution are inversely related in water, following the equation: [H+][OH-] = 10^-14 at 25°C.
In an acidic pH, the concentration of hydrogen ions (H+) is greater compared to other ions. This is because acidic solutions have a higher concentration of H+ ions, leading to a decrease in pH below 7.
A supersaturated solution.
diffusion(movement of solute from area of greater concentration to lesser) osmosis(movement of water from an area of greater water concentration to lesser)