zooool Flashcards
(36 cards)
homogenous mixture of two or more components
solution
dissolving medium
solvent
components in smaller quantities within a solution
solute
neucleoplasm and cytosol
intracellular fluid
fluid on the exterior of the cell
interstitial fluid
particles tend to spread or distribute themselves evenly within a solution
diffusion
movement is from high to low concentration or down a concentration gradient
diffusion
unassisted process
solute are lipid soluble materials or small enough to pass through the membrane pores
simple diffusion
simple diffusion of water
highly polar water easily crosses the plasma membrane
osmosis
substances require a protein carrier for passive transport
facilitated diffusion
the molecule dispersion or movement of molecules of a substance over those
of another.
diffusion
is the diffusion of solvent or gas through differentially permeable or semi-
permeable membrane from greater to lesser concentration.
osmosis
is the pressure exerted by the molecules of the solute which is
directly proportional to the number of particles of molecules
osmotic pressure
is one which the concentration is equal to that within the cell
isotonic solution
is one in which the osmotic pressure is equal to that within the
cell.
isosmotic pressure
s a solution with a higher osmotic pressure than that of the
cell; thus, causing the cell to shrink (crenation). This contains less solvent and
more solute.
hypertonic solution
is a solution with a lesser osmotic pressure than that of the
cell; thus, causing the cell to swell and even burst. This contains more solvent and
less solute.
hyporonic solution
refers to the diffusion of dissolved substance through a differentially
permeable membrane.
dialysis
is where a substance is transported by means of a carrier;
thus, otherwise known as ‘carrier mediated’ diffusion
facilitated diffusion
is a process by which water and dissolved substances pass through a
membrane when hydrostatic pressure (pressure due to weight) on one side of the
membrane is greater than the other. Hydrostatic pressure constitutes a pushing force that
pushes both water and solute through the membrane
filtration
cell eating
phagocytosis
cell drinking
pinocytosis
–Division of the nucleus–Results in the formation of two daughter nuclei
mitosis
–Division of the cytoplasm–Begins when mitosis is near completion–Results in the formation of two daughter cells
cytokinesis