Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
diffusion |
process in which molecules spread from an area of high concentration to an area of low concentration |
|
facilitated diffusion |
process of diffusion in which molecules pass across the membrane through protein channels |
|
osmosis |
diffusion of water through a selectively permeable membrane |
|
osmotic pressure |
pressure that must be applied to prevent osmotic movement across a selectively permeable membrane |
|
active transport |
the energy-requiring process that moves material across a cell membrane against a concentration difference |
|
isotonic |
equal concentration of solute in the cell and the environment (water in and out); maintains equilibrium; "same strength" |
|
hypertonic |
concentration of solutes in the environment is higher than the cell (water moves out of the cell); "above strength" |
|
hypotonic |
concentration of solutes in the environment is lower than the cell (water moves into the cell); "below strength" |
|
"protein pumps" |
a kind of protein that is capable of pumping compounds that could pose a threat to the cell |
|
exocytosis |
a process in which materials are released from a cell |
|
endocitosis |
process of taking material into the cell by means of infolding or pockets of the cell membrane |
|
aquaporins |
water channel protein in a cell |
|
phagocytosis |
process of taking large particles into the cell (solids) |
|
pinocytosis |
process of taking liquid into the cell |
|
molecular transport |
involves the movement of small molecules and ions in and out of cells across the cell membrane |
|
bulk transport |
the transport of very large molecule and solid clumps of material in and out of the cell |
|
hydrophobe |
a compound or material that is water repelling |
|
equilibrium |
state of balance: condition in which all actioning influences are balanced |
|
permeable |
capable of being passed through |
|
passive transport |
the movements of materials across the cell membrane without using cellular energy |