Biology Cellular TrAnsport Study Guide

osmosis
the diffusion of water from high to low across a semi permeable membrane

cholesterol
acts as a rebar and stabilizes plasma membrane

carrier protein
opens and closes to allow certain BIG molecules in and out of the cell

passive transport
materials move in and out of the cell with no energy use

channel protein
hollow tube like structure that allows for transport of materials

facilitated diffusion
proteins helping with no energy powered by the concentration gradiens

active transport
against concentration gradient energy requires

hyperinic solution
concentration of solutes is more outside the cell than inside the cell

homeostasis
the plasma membrane maintains this in the cell

concentration gradient
main component that controls osmosis

hypotonic solution
concentration of solutes is less outside the cell than inside

phospholipid bilayer
another name for plasma membrane

isotonic solution
concentrations of solution and cell are equal

shrivel
hypertonic solution causes cells to do this

mitochondria
this is where cells get their energy from

normal
cells in isotonic solutions are said to be

swell
cells in hypotonic solutions will usually

energy
active transport requires

high to low
concentration gradient usually goes from