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13 cards from this deck
Difference in particle concentration between two areas
Steeper gradient = faster diffusion rate
Increases rate of diffusion
Changes kinetic energy of particles, affecting movement speed
Alveoli in the lungs
Villi in the small intestine
Faster diffusion
Smaller molecules diffuse faster than larger ones
Nonpolar molecules (easier than polar molecules)
Large surface area, steep gradient, short diffusion distance
Large surface area and thin walls
Carbon dioxide
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