Passive Transport: particles move across membrane with concentration gradient, "Down the hill" or WITH the concentration gradient, oxygen & carbon dioxide are transported this way, osmosis, diffusion, and facilitated diffusion, particles move from HIGH to LOW concertation , water molecules are transported this way, ATP is not requried, , , , Active Transport: Require input of energy, particles move across membrane against concentration gradient, "Up the hill" or AGAINST the concentration gradient, ions (like Na+ from salt) and large molecules (like sugar) are transported this way, endocytosis and exocytosis, particles move from LOW to HIGH concentration, ATP is required, , , ,

Station 2: Passive & Active Transport

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