Biology Midterm Membrane & Cell Transport

Front 1

cell membrane

Back 1

controls what enters and leaves the cell

Front 2

phospholipid bilayer

Back 2

what the cell mambrane arranges it's self into, with the phospholipids

Front 3

polar heads

Back 3

the phosphlipids have hydrophilic, polar heads that arrange themselves next to eachother to interact with H20.

Front 4

Non-polar tails

Back 4

the talis of the phospholipids and hydrophobic and non-polar the do not like water

Front 5

selectively permiable membrane

Back 5

allows certain substances to cross through the membrane more easily than others

Front 6

equillibrium

Back 6

isotonic substance, when the substances are equally spread out

Front 7

diffusion

Back 7

movement of particles from a high concentration to a low concentration

Front 8

facilitated diffusion

Back 8

molecules cross the membrane with the help of protein channels (polar, monomers, an ions)

Front 9

osmosis

Back 9

the diffusion of water through a selectively permiable membrane

Front 10

hypotonic

Back 10

less solute outside the cell than inside

Front 11

hypertonic

Back 11

more solute outside the cell than inside the cell
HYPerTONIC

Front 12

hypotonic

Back 12

less solute outside the cell than inside the cell
hyPOTONic

Front 13

isotonic

Back 13

equal solute inside and outside of the cell

Front 14

active transport

Back 14

requires energy, movign substances from low to high

Front 15

endocytosis

Back 15

moving large material into the cell by the menas of membrane infolding

Front 16

exocytosis

Back 16

release of large materials out of the cell