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12 cards from this deck
Particles move from higher to lower concentration until evenly spread
Passive transport (no energy required)
Difference in concentration across a space
Down the concentration gradient (high to low)
Oxygen and carbon dioxide
Glucose and amino acids
Sodium and potassium ions
Alveoli into the blood
From blood into alveoli to be exhaled
From gut into the blood
Homeostasis (stable internal conditions)
Carbon dioxide
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