groupechapter3.txt

physical process

atoms, molecules, and ions in a liquid or air solution move from higher concentration to lower concentration

H2O molecules moves through membrane towards solution with greater osmotic pressure

the difference of higher concentration to an area of lower concentration

random movements continue but there is no further net movement; becomes uniform

total solute concentration of body fluid

concentrations are unequal but are stable

solutes

ions move from higher concentration to lower concentration

ability of osmosis to generate enough pressure to lift volume of water

excessive pressure

under; below pressure

same pressure

separation of solids from water

physiological processes

two fatty acids plus phosphate group

a mechanism can close or open some of the channels in cell membranes where ions pass

transports Na ions out; K ions into cells

particles that are too big are conveyed in a vesicle and form a section of the cell membrane

H2O(liquid)

solids

proteins

moves substances across