Chapter 3 test Review Flashcards
Filtration diffusion
Movement of molecules from high to low concentration through the plasma membrane
Facilitated diffusion
Same except movement is across a semipermeable membrane with help of a carrier (ATP not required)
Osmosis
Net movement of water from region of high water concentration to low water concentration;important in maintaining normal cell size and shape
Simple diffusion
Net movement if any substance from region of higher concentration to region of lower concentration (membrane not required)
Isotonic
Concentration of solute were both sides are the same there is no movement there is no changing of the shape of cell
Hypotonic
Concentration of solute where less I outside than inside the RBC, there is net movement moved into the RBC, it swells (hemolysis) in the cells overall shape
Hypertonic
Concentration of solute greater outside the RBC than inside, net movement is outside of the RBC, overall shrinks the cell (crenation)
Passive transport depends on _______ energy to move materials
Kinetic
Equilibrium
When a solution has an equal number of molecules move in and out of a cell
Mechanisms that move substances across a cell membrane requiring energy are known as?
Active transport
Pinocytosis
The infolding of a cells membrane around a liquid droplet to bring it into the cell
Diffusion
Movement of any substance from high concentration to a low concentration whether or not a membrane is involved
Active transport
Movement of a substance from a low concentration to a high concentration
Vesicles
In executors is these structures unite with the cell membrane and release their contents to the outside of the cell
Phagocytosis
Is the process by which sounds are taken through a cell membrane
