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homeostasis (active transport:moves against the gradient moves from high…
homeostasis
active transport:moves against the gradient
moves from high to low
and requires ATP_
protein pumps:works against the gradient and requires atp
endocytosis: the movement of the cell membrane to bring molecules into the cell
exocytosis: Fusing of the cell membrane with the vesicle to remove molecules from the cell
cell membrane
controls what enters and exits the cell
properties that help it are...
it is flexible
2.selectively permeable
3.makes lipids and protein
self sealing
helps maintain homeostasis
Passive Transport is the movement of molecules with the concentration gradient
Movement from high to low.
Diffusion: Movement from high concentration to low concentration
Facilitated diffusion: Diffusion of large molecules, needs help from membrane protein
Osmosis: movement of water across membrane from high to low
Tonicity
Hypertonic: More concentration outside of the cell . Causes cell to shrink
Hypotonic: Less concentration on the outside of the cell. Causes cell to swell
Isotonic: The same amount of concentration inside and outside of cell. Cell will not change