gap junctions , desmosomes , tight junctions
desmosomes , tight juctions , gap junctions
gap junctions , tight junctions , desmosomes
tight junctions , desmosomes , gap junctions
Briefly define osmosis and diffusion , being sure to explain how they are different and how they are similar .
Both diffusion and osmosis involve movement of water molecules across cell membranes , but diffusion spreads out the molecules evenly into the available space whereas osmosis diffuses water across a selectively permeable membrane .
Requires energy to move molecules