bio quiz omg stop asking all these questions damn it Flashcards
environment
cell membrane separates the components of a cell from itโs ENVIRONMENT
selectively permeable
โGatekeeper of the cell,โ Regulates the flow of materials into and out of the cell
homeostasis
stable internal environment [cell membrane helps cell maintain/is responsible for homeostasisโstable internal balance]
active AND passive transport
a process to maintain homeostasis within the cell
cell membrane
the cell membrane, AKA the phospholipid bilayer, separates the components of a cell from itโs environment. (Made of Phosphate, lipids, and protein (AKA plasma membrane)
passive transport
A process that does NOT require energy to move molecules from a HIGH to LOW concentration of that molecule.
diffusion
Diffusion is the movement of small particles across the cell membrane until homeostasis is reached
(These particles move from an area of high concentration to an area of low concentration of that particle.)
(a type of PASSIVE transport )
facilitated diffusion
Facilitated diffusion requires the help of carrier and channel proteins to move across the cell membrane
(These particles move from an area of HIGH concentration to an area of LOW concentration of that particle.)
(a type of PASSIVE transport)
osmosis
Osmosis is the movement of water through a selectively permeable membrane like the cell membrane
(water mover from high to low cncentration)
hypotonic solutions
(osmosis concentration) contain a low concentration of solute relative to another solution (e.g. the cellโs cytoplasm). When a cell is placed in a hypotonic solution, the water diffuses into the cell, causing the cell to swell and possibly explode.
hypertonic
osmosis concentration) the water or solution OUTSIDE of the cell is saltier than the INSIDE of the cell.
Hyper = โmoreโ or โaboveโ
isotonic solution
contain the same concentration of solute as another solution. the water diffuses into and out of the cell at the same rate.
active transport
Active transport is the movement of molecules from LOW to HIGH concentration.
(uses energy because materials must be pumped up against the membrane)
EXOcytosis
how materials EXIT the cell (how the cell uses the bathroom)
(type of active transport)
ENDOcytosis
how materials ENTER the cell (cell eating/engulfing)
(type of active transport)
PINOcytosis
how SMALL materials ENTER the cell (cell eating/engulfing)
(type of active transport)
PHAGOcytosis
how LARGER materials ENTER the cell (cell eating/engulfing)
protein pumps
protien that works as pumps (to pump materials against the cell membrane in active transport)
