AP BIO CHAPTER 7 VOCAB

selectively permeable

only lets some things in and out

amphipathic

has both hydrophobic and hydrophilic parts

fluid mosaic model

the accepted model of the cell membrane

diffusion

movement from higher concentration to lower concentration

passive transport

type of transport that does not require energy

hypertonic

more solute less solvent

hypotonic

more solvent less solute

isotonic

equal amounts of solute and solvent

osmosis

diffusion of water through a membrane

turgid

firm

plasmolysis

when a cell shrinks due to a loss of water

facilitated diffusion

diffusion through protein channels.

active transport

movement from a less concentrated area to a more concentrated area using energy

cotransport

cell membrane is taking in and out substances at the same time

exocytosis

cell takes out large particles

pinocytosis

cell takes in liquids

receptor mediated endocytosis

ligands bind to receptors and are taken into the cell