THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
concentration of water molecules inside and outside the cell
|
|
|
concentration of enzymes on either side of the cell membrane
|
|
|
rate of molecular motion on either side of the cell membrane
|
|
|
rate of movement of insoluble molecules inside the cell
|
Detailed explanation-1: -Osmosis is the diffusion of the solvent through a semi-permeable membrane from a solution of a higher concentration of solvent to a solution of a lower concentration of solvent. It is passive transport and thus it does not require energy but depends on the concentration of a water molecule.
Detailed explanation-2: -Osmosis and Net Movement of Water Osmosis is the net movement of water across a selectively permeable membrane driven by a difference in solute concentrations on the two sides of the membrane. A selectively permiable membrane is one that allows unrestricted passage of water, but not solute molecules or ions.
Detailed explanation-3: -Water moves through a semipermeable membrane in osmosis because there is a concentration gradient across the membrane of solute and solvent. The solute cannot effectively move to balance the concentration on both sides of the membrane, so water moves to achieve this balance.
Detailed explanation-4: -1: Osmosis: In osmosis, water always moves from an area of higher water concentration to one of lower concentration.
Detailed explanation-5: -If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, there is no net water movement, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.