Ex 5: Diffusion & Osmosis Flashcards
In relation to the the plasma membrane, does an Active Processes require
A) cellular energy
B) no cellular energy because kinetic energy from particles moves the cell from an area of higher concentration to an area of lower concentration
A
In relation to the the plasma membrane, does an Passive Processes require
A) cellular energy
B) no cellular energy because kinetic energy from particles moves the cell from an area of higher concentration to an area of lower concentration
B
What do you call a type of passive cell transport where molecules move from areas of high concentration to areas of low concentration in order to decrease the concentration gradient.
Can occur in any mixture.
Diffusion
A Concentration Gradient indicates there is a difference in the concentration of ______ or ______ inside the cell (intracellular) compared to outside the cell (extracellular)
molecules, ions
What do you call the movement of solvent (dissolving medium, which is water in living organisms) particles across a semipermeable membrane from a dilute solution into a concentrated solution?
The solvent moves to dilute the concentrated solution and equalize the concentration on both sides of the membrane.
Can ONLY occur in a semipermeable membrane.
Osmosis
In osmosis, water diffuses from an area of (higher/lower) water concentration but lower solute concentration(hypotonic solution), to an area of (higher/lower) water concentration but higher solute concentration(hypertonic solution).
higher, lower
Solute concentration is the amount of particles dissolved in a solution - true or false?
True
_______ refers to two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.
isotonic solution
Tonicity is _____
measure of osmotic pressure of 2 solutions separated by a semi-permeable membrane.
