Diffusion biology
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10 Terms
What do all particles have?
Kinetic energy and they constantly move around and bump into each other
Diffusion definition
the spreading out of particles resulting in a net movement from a region of their higher concentration to a region of their lower concentration, down a concentration gradient
what is a concentration gradient?
a difference in concentration between 2 areas is called a concentration gradient
why is a diffusion a passive process?
because particles move down the concentration gradient so diffusion is a passive process
passive process
no energy needed
what does the rate of diffusion depend on?
the concentration gradient
the surface area of the membrane#
the temperature of the solution
how do cells use diffusion
oxygen and diffusion diffuse into cells for respiration
how does the small intestine use diffusion?
oxygen and glucose diffuse into the cells for respiration
how does the Urea use diffusion?
diffuse from liver cells into plasma to be excreted