Regarding osmotic pressure: A. it mainly describes the force that moves solvent molecules across a unit area of semipermeable barrier separating solutions of different concentrations TRUE/FALSE B. its value is described both in size and direction TRUE/FALSE C. it has units as weight of solute per weight of solvent in the solution TRUE/FALSE D. its units are in units of pressure TRUE/FALSE E. oncotic pressure is a special form of osmotic pressure exerted by plasma proteins TRUE/FALSE

Define osmotic pressure of a solution. How is the osmotic pressure related to the concentration of a solute in a solution? (Comptt. Delhi 2015)

For each statement, indicate whether it is true or false Osmosis is the active transport of water across a selectively permeable membrane.    Aquaporins increase membrane permeability to water in some cell types, such as kidney cells.   During osmosis, water moves from a solution with proportionately more water across a selectively permeable membrane into a solution with proportionately less water.   Osmotic pressure is the force that assists water in moving by osmosis across a selectively permeable membrane.   The greater the concentration of a solution (the less water it has), the greater the tendency for water to move into the solution, and the greater the osmotic pressure to prevent that movement.

Osmotic pressure in blood vessels is primarily due to?  The concentration of plasma sodium.  Atmospheric pressure.  The pressure exerted by gravity.  The concentration of plasma proteins.

Define the following terms related to osmosis: Osmotic pressure: Isotonic: Hypotonic: Hypertonic:

The movement of water through the cell membrane is called as OsmosisReverse osmosisPermeabilityTurgor pressure