Passive: Does not require input of energy, particles move across membrane with concentration gradient, "Down a hill”, oxygen, carbon dioxide, and glucose are transported this way, osmosis, diffusion, and facilitated diffusion, particles move from their HIGH to LOW concertation , water molecules are transported this way, ATP is not requried, , , , Active: Requires input of energy, particles move across membrane against concentration gradient, "Up a hill”, ions and large molecules are transported this way, Na+/K+ pump, endocytosis and exocytosis, Particles move from their LOW to HIGH concentration, ATP is required, , , ,

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